Paper dividing and cutting machine

Abstract

The utility model relates to the technical field of paper cutting, in particular to a paper cutting machine which comprises a machine frame fixedly installed on the ground, two symmetrical tensioning rollers are fixedly connected in the machine frame, two limiting mechanisms are arranged at the two ends of the machine frame respectively and used for rolling or releasing kraft paper, and a tool changing mechanism is arranged in the machine frame and used for changing the tool changing mechanism. The tool changing mechanism comprises a round rod which is located between the two opposite side faces in the rack and rotationally connected, fixing blocks are fixedly connected to the two ends of the outer wall of the round rod correspondingly, supporting plates are slidably connected to the top faces and the bottom faces of the fixing blocks correspondingly, and a connecting rod is arranged between the two supporting plates at the opposite positions. A plurality of cutters are arranged on the outer wall of the connecting rod at equal intervals. According to the kraft paper slitting device, the cutter which is seriously abraded is moved to the upper portion, the intact cutter is moved to the lower portion, the operation of rapid cutter replacement can be achieved, and the kraft paper slitting efficiency can still be improved for the overall operation of kraft paper slitting.

Description

Technical Field

[0001] The utility model relates to the technical field of paper slitting, in particular to a paper cutting machine. Background Art

[0002] Water-absorbent kraft paper is a special type of kraft paper that has been processed through a special process and has high water absorption and moisture absorption properties. This type of paper is usually used in applications that require moisture-proof or water-absorbing properties, such as food packaging, furniture packaging, hardware packaging, building materials packaging, logistics packaging, and finished product packaging. During the production process of kraft paper, it is necessary to use a cutting machine (slitting machine) to cut wide-width kraft paper into multiple narrow-width kraft papers according to customer requirements.

[0003] Currently, when existing cutting machines are in use, especially when cutting relatively wide kraft paper, multiple cutting knives are usually installed on the cutting machine. However, the cutting knives will wear out after long-term use (or in the case of improper installation). Currently, it is usually necessary to stop the machine first, then replace the new cutting knives and start the machine again. Therefore, when replacing the cutting knives, the kraft paper cannot be continuously slit, and during the process of replacing the cutting knives, the machine downtime is relatively long, so the slitting efficiency of the kraft paper will be reduced. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a paper cutting machine to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A paper cutting machine, comprising:

[0007] A frame, which is installed and fixed on the ground, and two symmetric tension rollers are fixedly connected inside the frame;

[0008] Two limiting mechanisms, which are respectively arranged at both ends of the frame and are used for winding or releasing kraft paper;

[0009] A tool changing mechanism, which is arranged inside the frame and is located between the two limiting mechanisms. The tool changing mechanism includes a round rod rotatably connected between opposite side surfaces inside the frame. Both ends of the outer wall of the round rod are fixedly connected with fixing blocks. The top and bottom surfaces of the fixing blocks are both slidably connected with support plates. A connecting rod is arranged between two support plates at relative positions, and a plurality of cutting knives are equidistantly arranged on the outer wall of the connecting rod.

[0010] Furthermore: One side surface of the cutting knife is fixedly connected with two symmetric clamping pieces. The two clamping pieces are fastened by bolts, and anti-slip pads are fixedly connected to the opposite side surfaces of the two clamping pieces at relative positions.

[0011] Further, chutes are provided on both the top surface and the bottom surface of the fixed block. The bottom end of the support plate is fixedly connected with a slider that is slidably connected to the chute at the corresponding position. A screw rod is rotatably connected between the two short side surfaces inside the chute and is threadedly engaged with the slider at the corresponding position. One end of the screw rod penetrates through the fixed block and is fixedly connected with a nut. Cylindrical sleeves are fixedly penetrated through the opposite side surfaces of the two support plates at the same height.

[0012] Further, a support block is fixedly connected to one side surface of the frame. One end of the round rod penetrates through the side surface of the frame and is fixedly connected with a third gear. An electric push rod is fixedly connected to the side surface of the support block. The output end of the electric push rod is fixedly connected with a rack that meshes with the third gear.

[0013] Further, placing grooves are penetrated and provided at both ends of the opposite side surfaces of the frame. Limiting grooves are provided on the inner wall of the placing groove. Slide holes are penetrated and provided on both sides of the frame corresponding to the placing groove. The limiting mechanism includes:

[0014] A round roller, which is movably inserted between the two placing grooves at the corresponding positions;

[0015] Two rotating rings, which are respectively fixedly connected to both ends of the outer wall of the round roller at the corresponding positions and are movably inserted into the limiting grooves at the corresponding positions;

[0016] Four connecting blocks, which are respectively slidably connected in the slide holes at the corresponding positions. Limiting blocks that are abutted against the frame are fixedly connected to both ends of the connecting block. Semi-circular holes are provided on the opposite side surfaces of the two limiting blocks at the relative positions.

[0017] Further, a connecting plate is fixedly connected to the side surface of the limiting block outside the frame. A double-headed cylinder is fixedly connected between the two connecting plates at the relative positions.

[0018] Further, a support frame that is fixedly penetrated through the corresponding double-headed cylinder is fixedly connected to the lower part of the frame corresponding to the placing groove. A first gear is fixedly connected to one end of the outer wall of the round roller. A motor is fixedly connected to the side surface of one of the support frames at the same round roller. The output end of the motor penetrates through the support frame at the corresponding position and is fixedly connected with a second gear that meshes with the first gear at the corresponding position.

[0019] Compared with the prior art, the beneficial effects of the present utility model are:

[0020] 1. By moving the severely worn cutting knife to the upper part and moving the intact cutting knife to the lower part, the device can realize the operation of quickly replacing the knife, and for the overall operation of cutting kraft paper, the cutting efficiency of kraft paper can still be improved.

[0021] 2. By starting four double-headed cylinders, four limit blocks at corresponding positions can clamp the round roller, thereby preventing the round roller from shaking during rotation. Therefore, when cutting kraft paper, cutting errors caused by the shaking of the round roller can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a schematic diagram of the frame in the present invention;

[0024] Figure 3 is a schematic diagram of the limit mechanism in the present invention;

[0025] Figure 4 is a schematic diagram of the tool changing mechanism structure in the present invention;

[0026] Figure 5 is an enlarged view of part A in the present invention.

[0027] In the figure: 1. Frame; 11. Support block; 12. Placing groove; 13. Slide hole; 14. Support frame; 15. Tensioning roller; 2. Limit mechanism; 21. Round roller; 22. Rotating ring; 23. Limit block; 24. Connecting plate; 25. Double-headed cylinder; 26. Gear 1; 27. Motor; 28. Gear 2; 3. Tool changing mechanism; 31. Round rod; 32. Fixed block; 321. Slide groove; 33. Support plate; 331. Cylindrical sleeve; 332. Screw; 34. Connecting rod; 35. Cutting tool; 351. Clamping piece; 36. Gear 3; 37. Electric push rod; 38. Rack. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1-5, in the embodiment of the present utility model, a paper cutting machine includes a frame 1, two limiting mechanisms 2, and a tool changing mechanism 3. The frame 1 is fixedly installed on the ground. Two symmetrical tension rollers 15 are fixedly connected inside the frame 1. The two limiting mechanisms 2 are respectively arranged at both ends of the frame 1 and are used for winding or releasing kraft paper. The tool changing mechanism 3 is arranged inside the frame 1 and is located between the two limiting mechanisms 2. The tool changing mechanism 3 includes a round rod 31 rotatably connected between the opposite inner side surfaces of the frame 1. Fixed blocks 32 are fixedly connected to both ends of the outer wall of the round rod 31. Support plates 33 are slidably connected to the top and bottom surfaces of the fixed blocks 32. A connecting rod 34 is arranged between the two support plates 33 at the relative positions. A plurality of cutting knives 35 are arranged at equal intervals on the outer wall of the connecting rod 34.

[0030] Specifically, first, a roll of kraft paper is put on one of the limiting mechanisms 2 and placed on the frame 1. Then, the other limiting mechanism 2 is placed on the frame 1. The staff passes one end of the roll of kraft paper through an adjacent tension roller 15, and then cuts the kraft paper with a plurality of cutting knives 35 at the connecting rod 34 below. The cut kraft paper is passed through another tension roller 15 and wound around the other limiting mechanism 2. Since the cutting knives 35 will be worn after long-term use, which will cause an increase in the width error of the kraft paper. At this time, the machine is first stopped and then the round rod 31 is rotated to move the plurality of cutting knives 35 originally located below to the upper side, and the cutting knives 35 originally located above are moved to the lower side. Then, by starting the machine, the kraft paper can be continuously cut. Then, the staff can replace the severely worn cutting knives 35 that have moved to the upper side. Although the machine stops working during the tool changing process, the stopping time is short and has little impact on the cutting efficiency of the kraft paper. By moving the severely worn cutting knives 35 to the upper side and the intact cutting knives 35 to the lower side, the device can achieve the operation of quickly changing tools, and for the overall operation of cutting the kraft paper, the cutting efficiency of the kraft paper can still be improved.

[0031] Embodiment 1

[0032] Such as Figure 4 And Figure 5As shown, in this embodiment, two symmetric clamping pieces 351 are fixedly connected to one side surface of the cutting knife 35. The two clamping pieces 351 are fastened by bolts. Anti-slip pads are fixedly connected to the opposite side surfaces of the two clamping pieces 351 at the relative positions. Sliding grooves 321 are formed in the top and bottom surfaces of the fixed block 32. The bottom end of the support plate 33 is fixedly connected with a slider that is slidably connected to the sliding groove 321 at the corresponding position. A screw rod 332 that is rotatably connected between the two short side surfaces inside the sliding groove 321 and is screwed through the slider at the corresponding position. One end of the screw rod 332 penetrates through the fixed block 32 and is fixedly connected with a nut. Cylindrical sleeves 331 are fixedly penetrated through the opposite side surfaces of the two support plates 33 at the same height. A support block 11 is fixedly connected to one side surface of the frame 1. One end of the round rod 31 penetrates through the side surface of the frame 1 and is fixedly connected with a third gear 36. An electric push rod 37 is fixedly connected to the side surface of the support block 11. The output end of the electric push rod 37 is fixedly connected with a rack 38 that meshes with the third gear 36.

[0033] In this embodiment, the start of the electric push rod 37 can cause the rack 38 to drive the third gear 36 to rotate. The rotation of the third gear 36 can cause the round rod 31 to drive the two connecting rods 34 to rotate, so that the upper cutting knife 35 and the lower cutting knife 35 can be switched, thus realizing the operation of quickly changing the knife. When it is necessary to disassemble the severely worn cutting knife 35, turn the two nuts above with a wrench, so that the two screw rods 332 rotate. The rotation of the two screw rods 332 can cause the support plates 33 at the corresponding positions to move. When the two upper support plates 33 move away from each other, the connecting rod 34 at the corresponding position can be removed from between the two support plates 33. Then, after using a tool to remove the bolt at the cutting knife 35, the cutting knife 35 is removed from one end of the connecting rod 34. Then, multiple cutting knives 35 are installed according to the number of kraft paper cuts. After the cutting knives 35 are installed on the connecting rod 34, the connecting rod 34 is placed between the two upper cylindrical sleeves 331. Use a wrench to make the two support plates 33 at the corresponding positions approach each other, and make the two ends of the connecting rod 34 respectively sleeved in the cylindrical sleeves 331 at the corresponding positions.

[0034] Embodiment Two

[0035] As Figure 3As shown, in this embodiment, placing grooves 12 are penetrated and provided at both ends of the opposite side surfaces of the frame 1. Limiting grooves are provided on the inner walls of the placing grooves 12. Slide holes 13 are penetrated and provided on both sides of the side surface of the frame 1 corresponding to the placing grooves 12. The limiting mechanism 2 includes a round roller 21, two rotating rings 22, and four connecting blocks. The round roller 21 is movably inserted between two placing grooves 12 at corresponding positions. The two rotating rings 22 are respectively fixedly connected to both ends of the outer wall of the round roller 21 at corresponding positions and are movably inserted into the limiting grooves at corresponding positions. The four connecting blocks are respectively slidably connected in the slide holes 13 at corresponding positions. Limiting blocks 23 that are in contact with the frame 1 are fixedly connected to both ends of the connecting blocks. Semi-circular holes are provided on the opposite side surfaces of the two limiting blocks 23 at relative positions. A connecting plate 24 is fixedly connected to the side surface of the limiting block 23 located outside the frame 1. A double-headed cylinder 25 is fixedly connected between the two connecting plates 24 at relative positions. A support frame 14 that is penetrated and fixed by the corresponding double-headed cylinder 25 is fixedly connected to the lower part of the side surface of the frame 1 corresponding to the placing groove 12. A first gear 26 is fixedly connected to one end of the outer wall of the round roller 21. A motor 27 is fixedly connected to the side surface of one of the support frames 14 located at the same round roller 21. The output end of the motor 27 penetrates the corresponding support frame 14 and is fixedly connected to a second gear 28 that meshes with the first gear 26 at the corresponding position.

[0036] In this embodiment, first, a kraft paper roll is sleeved on the outer wall of one of the round rollers 21, and the kraft paper roll is fixed by an inner support mechanism inside the round roller 21 (in order to fix the kraft paper roll, an inner support mechanism is usually provided inside the round roller 21. Since the inner support mechanism is a prior art, it will not be elaborated here). Then, the round roller 21 sleeved with the kraft paper roll is placed between two of the placing grooves 12, and the two rotating rings 22 on the outer wall of the round roller 21 are respectively located in the limiting grooves at corresponding positions. Then, the other round roller 21 is placed in the other two placing grooves 12. By starting the four double-headed cylinders 25, the four limiting blocks 23 at corresponding positions can clamp the round roller 21, thereby preventing the round roller 21 from shaking during rotation. Therefore, it is possible to avoid cutting errors caused by the shaking of the round roller 21 when cutting the kraft paper.

[0037] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed by the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0038] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A paper cutting machine, characterized in that, Including: A frame (1) which is installed and fixed on the ground, and two symmetric tension rollers (15) are fixedly connected inside the frame (1); Two limiting mechanisms (2) which are respectively arranged at both ends of the frame (1) and are used for winding or unwinding kraft paper; A tool changing mechanism (3) which is arranged inside the frame (1) and is located between the two limiting mechanisms (2). The tool changing mechanism (3) includes a round rod (31) which is rotatably connected between the opposite two side surfaces inside the frame (1). Fixed blocks (32) are fixedly connected to both ends of the outer wall of the round rod (31). Support plates (33) are slidably connected to the top and bottom surfaces of the fixed blocks (32). A connecting rod (34) is arranged between the two support plates (33) at the relative positions. A plurality of cutting knives (35) are arranged at equal intervals on the outer wall of the connecting rod (34).

2. The paper cutting machine according to claim 1, wherein Two symmetric clip pieces (351) are fixedly connected to one side surface of the cutting knife (35). The two clip pieces (351) are fastened by bolts. Anti-slip pads are fixedly connected to the opposite side surfaces of the two clip pieces (351) at the relative positions.

3. The paper cutting machine according to claim 2, characterized in that, Sliding grooves (321) are respectively opened on the top and bottom surfaces of the fixed blocks (32). Sliders which are slidably connected to the corresponding sliding grooves (321) are fixedly connected to the bottom ends of the support plates (33). Screws (332) which are rotatably connected between the two short side surfaces inside the sliding grooves (321) and are screwed through the corresponding sliders are arranged. One end of the screw (332) penetrates through the fixed block (32) and is fixedly connected with a nut. Cylindrical sleeves (331) are respectively fixedly penetrated through the opposite side surfaces of the two support plates (33) at the same height.

4. The paper cutting machine according to claim 3, characterized in that, A support block (11) is fixedly connected to one side surface of the frame (1). One end of the round rod (31) penetrates through the side surface of the frame (1) and is fixedly connected with a third gear (36). An electric push rod (37) is fixedly connected to the side surface of the support block (11). A rack (38) which is meshed with the third gear (36) is fixedly connected to the output end of the electric push rod (37).

5. The paper cutting machine according to claim 1, characterized in that, Placing grooves (12) are respectively penetrated and opened at both ends of the opposite side surfaces of the frame (1). Limiting grooves are opened on the inner walls of the placing grooves (12). Slide holes (13) are respectively penetrated and opened on both sides of the side surface of the frame (1) corresponding to the placing grooves (12). The limiting mechanism (2) includes: A round roller (21) which is movably inserted between the two placing grooves (12) at the corresponding positions; Two rotating rings (22) which are respectively fixedly connected to both ends of the outer wall of the round roller (21) at the corresponding positions and are movably inserted into the corresponding limiting grooves; Four connecting blocks which are respectively slidably connected in the corresponding slide holes (13). Limiting blocks (23) which are abutted against the frame (1) are fixedly connected to both ends of the connecting blocks. Semi-circular holes are respectively opened on the opposite side surfaces of the two limiting blocks (23) at the relative positions.

6. The paper cutting machine according to claim 5, characterized in that, A connecting plate (24) is fixedly connected to the side surface of the limiting block (23) located outside the frame (1). A double-headed air cylinder (25) is fixedly connected between the two connecting plates (24) at the relative positions.

7. The paper cutting machine according to claim 6, characterized in that, A support frame (14) fixedly connected to the lower side of the side surface of the frame (1) corresponding to the placement groove (12) and penetrating and fixing the double-headed cylinder (25) at the corresponding position. One end of the outer wall of the round roller (21) is fixedly connected with a first gear (26). A motor (27) is fixedly connected to the side surface of one of the support frames (14) at the same round roller (21). The output end of the motor (27) penetrates the support frame (14) at the corresponding position and is fixedly connected with a second gear (28) meshing with the first gear (26) at the corresponding position.

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