A cutting knife device for a slitting machine

Abstract

The present invention relates to the technical field of slitting machines, and in particular to a cutting knife device of a slitting machine, comprising a frame, a lower cutting knife assembly and a plurality of upper cutting knife assemblies, wherein an upper cutting knife assembly comprises an upper cutting knife, and the lower cutting knife assembly comprises a lower driving source, a transmission shaft, a plurality of bearings and a plurality of lower cutting knives, wherein the lower driving source is arranged on the frame and drives the transmission shaft to rotate; the plurality of bearings are arranged in sequence along the length direction of the transmission shaft; the bearings are provided with an annular groove, in which the lower cutting knife is accommodated, and a lower cutting knife cooperates with an upper cutting knife for cutting paper; an annular groove is located directly below an upper cutting knife; the plurality of upper cutting knife assemblies are arranged on the frame in parallel with each other, and the center connecting lines of the plurality of upper cutting knife assemblies are arranged in parallel with the axis of the transmission shaft; by arranging the bearings on the transmission shaft, the lower cutting knife is fixedly connected to the bearings, thereby improving the stability of the fixing of the lower cutting knife, and thus improving the stability of paper slitting and cutting.

Description

Technical Field

[0001] The invention relates to the technical field of slitting machines, and in particular to a cutting knife device of a slitting machine. Background Art

[0002] The slitting machine cuts the roll-shaped base paper and cuts the base paper horizontally or vertically as needed. For vertical cutting, several cutting knives for slitting need to be installed. The cutting knives include an upper cutting knife and a lower cutting knife. The lower cutting knife is annularly sleeved on the rotating shaft. As the rotating shaft rotates, the upper cutting knife and the lower cutting knife complete the slitting of the paper during the paper conveying process. Due to the long-term instantaneous contact and cutting between the upper cutting knife and the lower cutting knife, the lower cutting knife is slightly displaced, and the matching degree of the upper cutting knife and the lower cutting knife changes accordingly, which ultimately affects the cutting quality of the paper. Summary of the invention

[0003] In order to overcome the disadvantage in the prior art that the lower cutting knife is slightly displaced, which affects the cutting quality, the object of the present invention is to provide a cutting knife device for a slitting machine to improve the cutting quality.

[0004] To achieve the above object, the technical solution of the present invention is:

[0005] A cutting knife device of a slitting machine comprises a frame, a lower cutting knife assembly and a plurality of upper cutting knife assemblies, wherein one of the upper cutting knife assemblies comprises an upper cutting knife, and the lower cutting knife assembly comprises a lower driving source, a transmission shaft, a plurality of bearing members and a plurality of lower cutting knives, wherein the lower cutting knife is ring-shaped;

[0006] The lower driving source is arranged on the frame and drives the transmission shaft to rotate, and the transmission shaft is rotatably connected to the frame;

[0007] A plurality of the bearing members are arranged in sequence along the length direction of the transmission shaft;

[0008] Each of the carriers is provided with an annular groove, the lower cutter is accommodated in the annular groove, the lower cutter is detachably connected to the carrier, and a lower cutter cooperates with an upper cutter to cut paper;

[0009] An annular groove is located directly below an upper cutter;

[0010] A plurality of upper cutter assemblies are arranged on the frame in parallel with each other, and a center line connecting the plurality of upper cutter assemblies is arranged in parallel with the axis of the transmission shaft.

[0011] Furthermore, each of the supporting members includes a left clamping member, a lower knife seat and a right clamping member, the left clamping member is detachably connected to the transmission shaft, the lower knife seat is detachably connected to the transmission shaft, the right clamping member is detachably connected to the transmission shaft, the lower cutting knife is fixedly connected to the lower knife seat, the annular groove is provided on the right clamping member or the left clamping member, the annular groove is provided close to the lower knife seat, and the clamping lower knife seat is clamped between the left clamping member and the right clamping member.

[0012] Furthermore, the left clamping member is annularly sleeved on the transmission shaft, the lower knife seat is annularly sleeved on the transmission shaft, and the right clamping member is annularly sleeved on the transmission shaft.

[0013] Furthermore, the transmission shaft includes a left shaft sleeve, a middle shaft and a right shaft sleeve, the left shaft sleeve and the right shaft sleeve are respectively arranged at the two ends of the middle shaft in the length direction, the left shaft sleeve is detachably connected to the middle shaft, the right shaft sleeve is detachably connected to the middle shaft, the left shaft sleeve is rotatably connected to the frame, the right shaft sleeve is rotatably connected to the frame, and the left shaft sleeve, the middle shaft and the right shaft sleeve are coaxially arranged.

[0014] Furthermore, the left shaft sleeve is provided with a left locking portion, the central shaft is provided with a left tapered hole, the left locking portion is in a frustum shape, and the left locking portion is embedded in the left tapered hole and is interference fit with the left tapered hole.

[0015] Furthermore, the right sleeve is provided with a right locking portion, the central shaft is provided with a right conical hole, the right locking portion is in a frustum shape, and the right locking portion is embedded in the right conical hole and has an interference fit with the right conical hole.

[0016] Furthermore, the cutting knife device of the slitting machine also includes an adjustment mechanism, which is connected to the left shaft sleeve and is used to adjust the connection tightness between the left shaft sleeve and the central shaft.

[0017] Furthermore, the frame includes a crossbeam, and the crossbeam is arranged parallel to the transmission shaft;

[0018] Each upper cutter assembly also includes an upper drive member and an upper cutter seat. The upper drive member is slidably connected to the crossbeam, and the upper drive member drives the upper cutter seat to move toward or away from the lower cutter assembly. The upper cutter is fixedly connected to one end of the upper cutter seat away from the upper drive member.

[0019] Furthermore, each of the upper cutter assemblies also includes an angle adjustment member, which is disposed between the upper drive member and the upper knife seat. The angle adjustment member is slidably connected to the upper drive member, and the upper knife seat is rotatably connected to the angle adjustment member.

[0020] Furthermore, the angle adjustment member includes a sliding member and an adjustment plate fixedly connected to the sliding member, the sliding member is slidably connected to the upper driving member, the adjustment plate is provided with a long hole, and an external screw passes through the long hole and is screwed to the upper tool holder.

[0021] The beneficial effects of the present invention are as follows: by arranging a bearing member on the transmission shaft, the lower cutter is fixedly connected to the bearing member, thereby improving the stability of the lower cutter fixation, thereby improving the stability of paper strip cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention from a first viewing angle;

[0023] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the present invention;

[0024] Figure 3 It is a schematic diagram of the disassembled structure of the lower cutter assembly of the present invention;

[0025] Figure 4 is a cross-sectional view of a lower cutter assembly of the present invention;

[0026] Figure 5 for Figure 4 A partial enlarged schematic diagram of part A;

[0027] Figure 6 It is a schematic diagram of the structure of the upper cutter assembly of the present invention;

[0028] Figure 7 It is a schematic diagram of the disassembled structure of the upper cutter assembly of the present invention;

[0029] Figure 8 This is a partial enlarged schematic diagram of part B in the figure.

[0030] Reference numerals include:

[0031] 1—frame 11—crossbeam 111—guide groove

[0032] 2—lower cutter assembly 21—lower drive source 22—transmission shaft

[0033] 2201—positioning groove 221—left shaft sleeve 2211—left locking part

[0034] 222—middle axis 2221—left tapered hole 2222—right tapered hole

[0035] 223—right sleeve 2231—right locking portion 23—carrying member

[0036] 2301—annular groove 231—left clamp 232—lower knife seat

[0037] 233—right clamp 24—lower cutter 3—upper cutter assembly

[0038] 31 - upper drive member 32 - upper knife seat 33 - upper cutter

[0039] 34 - angle adjustment member 341 - sliding member 3411 - guide rod

[0040] 3412—guide sleeve 3413—spring 342—adjustment plate

[0041] 3421—long hole 4—adjustment mechanism 41—hand wheel

[0042] 42 - screw 43 - screw seat 44 - screw connecting sleeve

[0043] 45—sliding shaft 46—fixed sleeve. DETAILED DESCRIPTION

[0044] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0045] See also Figures 1 to 8 A cutting knife device of a slitting machine of the present invention comprises a frame 1, a lower cutting knife assembly 2 and a plurality of upper cutting knife assemblies 3, wherein one of the upper cutting knife assemblies 3 comprises an upper cutting knife 33, and the lower cutting knife assembly 2 comprises a lower driving source 21, a transmission shaft 22, a plurality of bearing members 23 and a plurality of lower cutting knives 24, wherein the lower cutting knife 24 is ring-shaped;

[0046] The lower driving source 21 is disposed on the frame 1 and drives the transmission shaft 22 to rotate, and the transmission shaft 22 is rotatably connected to the frame 1;

[0047] A plurality of the bearing members 23 are sequentially arranged along the length direction of the transmission shaft 22;

[0048] Each of the carriers 23 is provided with an annular groove 2301, and the lower cutter 24 is accommodated in the annular groove 2301. The lower cutter 24 is detachably connected to the carrier 23, and one lower cutter 24 cooperates with one upper cutter 33 to cut paper;

[0049] An annular groove 2301 is located directly below an upper cutter 33;

[0050] The plurality of upper cutter assemblies 3 are arranged on the frame 1 in parallel with each other, and the center connecting line of the plurality of upper cutter assemblies 3 is arranged in parallel with the axis of the transmission shaft 22 .

[0051] Specifically, in the present embodiment, the number of upper cutter assemblies 3 is five, the number of carriers 23 is five, a lower cutter 24 is fixed to the middle part of a carrier 23, a positioning groove 2201 is provided on the side wall of the transmission shaft 22, the positioning groove 2201 extends along the length direction of the transmission shaft 22, the carrier 23 is annularly sleeved on the rotating shaft 22, and a machine rice is used to fix the carrier 23 to the rotating shaft 22, one end of the machine rice protrudes into the positioning groove 2201 and conflicts with the bottom wall of the positioning groove 2201, and the inner wall of the positioning groove 2201 limits the machine rice to prevent the carrier 23 and the rotating shaft 22 from rotating relative to each other, thereby improving the connection stability between the carrier 23 and the transmission shaft 22 The lower cutter 24 is fixed to the carrier 23, and the outer wall of the carrier 23 is provided with an annular groove 2301. The lower cutter 24 is accommodated in the annular groove 2301, thereby increasing the contact surface between the lower cutter 24 and the carrier 23. A plurality of connecting members are used to fix the lower cutter 24 to the carrier 23, thereby increasing the connection resistance between the lower cutter 24 and the carrier 23. That is, during the rotation process of the transmission shaft 22 and the paper conveying process, an upper cutter assembly 3 cooperates with a lower cutter 24 to complete the paper stripping. The annular groove 2301 is provided directly below the upper cutter 33, and space is reserved to prevent the carrier 23 from colliding with the upper cutter 33 in an accidental situation, thereby improving production safety.

[0052] By arranging the bearing member 23 on the transmission shaft 22 and the lower cutter 24 being fixedly connected to the bearing member 23 , the stability of the lower cutter 24 is improved, thereby improving the stability of the paper strip cutting.

[0053] Each of the carriers 23 includes a left clamping member 231, a lower knife seat 232 and a right clamping member 233. The left clamping member 231 is detachably connected to the transmission shaft 22, the lower knife seat 232 is detachably connected to the transmission shaft 22, the right clamping member 233 is detachably connected to the transmission shaft 22, the lower cutter 24 is fixedly connected to the lower knife seat 232, the lower knife seat 232 is clamped between the left clamping member 231 and the right clamping member 233, and the annular groove 2301 is provided on the right clamping member 233 or the left clamping member. 231, the annular groove 2301 is arranged near the lower knife seat 232, and the left clamping member 231 and the right clamping member 233 cooperate to clamp the lower knife seat 232. The arrangement of the left clamping member 231, the lower knife seat 232 and the right clamping member 233 can flexibly adjust the width specifications of the left clamping member 231, the lower knife seat 232 and the right clamping member 233 according to the needs of paper cutting specifications, that is, adjust the positions of the left clamping member 231, the lower knife seat 232 and the right clamping member 233 on the transmission shaft 22 to achieve the purpose of flexible use.

[0054] The left clamping member 231 is annularly sleeved on the transmission shaft 22, the lower knife seat 232 is annularly sleeved on the transmission shaft 22, and the right clamping member 233 is annularly sleeved on the transmission shaft 22. The annular left clamping member 231 increases the friction resistance between the left clamping member 231 and the transmission shaft 22, thereby improving the connection stability. Similarly, the setting of the annular lower knife seat 232 and the annular right clamping member 233 further improves the connection stability and improves production safety.

[0055] The transmission shaft 22 includes a left shaft sleeve 221, a middle shaft 222 and a right shaft sleeve 223. The left shaft sleeve 221 and the right shaft sleeve 223 are respectively arranged at the two ends of the middle shaft 222 in the length direction. The left shaft sleeve 221 is detachably connected to the middle shaft 222, and the right shaft sleeve 223 is detachably connected to the middle shaft 222. The left shaft sleeve 221 is rotatably connected to the frame 1, and the right shaft sleeve 223 is rotatably connected to the frame 1. The left shaft sleeve 221, the middle shaft 222 and the right shaft sleeve 223 are coaxially arranged. The transmission shaft 22 with a disassembly structure is convenient for the disassembly, assembly and maintenance of the cutting knife device, and is used to replace the lower cutting knife 24.

[0056] The left sleeve 221 is provided with a left locking portion 2211, and the central axis 222 is provided with a left conical hole 2221. The left locking portion 2211 is in a truncated cone shape. The left locking portion 2211 is embedded in the left conical hole 2221 and has an interference fit with the left conical hole 2221. The inclined surface of the left locking portion 2211 fits with the inclined surface of the left conical hole 2221. The friction between the inclined surfaces is used to increase the connection force between the left sleeve 221 and the central axis 222, thereby reducing the use of connecting parts.

[0057] The right sleeve 223 is provided with a right locking portion 2231, and the central shaft 222 is provided with a right conical hole 2222. The right locking portion 2231 is in a truncated cone shape. The right locking portion 2231 is embedded in the right conical hole 2222 and has an interference fit with the right conical hole 2222. The inclined surface of the right locking portion 2231 fits with the inclined surface of the right conical hole 2222. The friction between the inclined surfaces is used to increase the connection force between the right sleeve 223 and the central shaft 222, thereby reducing the use of connecting parts.

[0058] The cutting knife device of the slitting machine also includes an adjustment mechanism 4, which is connected to the left sleeve 221. The adjustment mechanism 4 is used to adjust the connection tightness between the left sleeve 221 and the middle shaft 222. The adjustment mechanism 4 includes a hand wheel 41, a screw 42, a screw seat 43, a screw connecting sleeve 44, a sliding shaft 45 and a fixed sleeve 46; the fixed sleeve 45 is fixedly connected to the frame, the sliding shaft 45 is slidably connected to the fixed sleeve 46, the left sleeve 221 is rotatably connected to the sliding shaft 45, the screw connecting sleeve 44 and the sliding shaft 45 are fixedly connected One end of the screw 42 is fixedly connected to the screw connecting sleeve 44, and the other end of the screw 42 is fixedly connected to the hand wheel 41. The screw 42 is screwed to the screw seat 43, and the screw seat 43 is fixedly connected to the frame. Rotate the hand wheel 41 to drive the screw connecting sleeve 44 and the sliding shaft 45 to move synchronously toward the direction of the central axis 222, so that the left locking portion 2211 of the left sleeve 221 presses the left tapered hole 2221, completing the tight connection between the left sleeve 221 and the central axis 222. Conversely, the left sleeve 221 and the central axis 222 are disassembled, which is convenient for disassembly and assembly.

[0059] The frame includes a crossbeam 11, and the crossbeam 11 is arranged parallel to the transmission shaft 22;

[0060] Each of the upper cutter assemblies 3 also includes an upper driving member 31 and an upper knife seat 32. The upper driving member 31 is slidably connected to the cross beam 11. The upper driving member 31 drives the upper knife seat 32 to move toward or away from the lower cutter assembly 2. The upper cutter 33 is fixedly connected to the end of the upper knife seat 32 away from the upper driving member 31. The side wall of the cross beam 11 is provided with a guide groove 111 to ensure the stability of the sliding direction of the upper driving member 31, that is, to ensure the stability of the moving direction of the upper cutter 33. The upper driving member 31 adopts a cylinder driving structure to drive the upper knife seat 32 to rise and fall in the vertical direction, and the upper cutter 33 approaches or moves away from the lower cutter 24 to complete the cutting purpose.

[0061] Each of the upper cutter assemblies 3 also includes an angle adjustment member 34, which is arranged between the upper driving member 31 and the upper knife seat 32. The angle adjustment member 34 is slidably connected to the upper driving member 31, and the upper knife seat 32 is rotatably connected to the angle adjustment member 34. According to production needs, the upper cutter 33 and the lower cutter 24 need to adopt point contact to ensure that during the rotation of the lower cutter 24, the upper cutter 33 and the lower cutter 24 cooperate to achieve the purpose of cutting paper instead of shearing the paper. Therefore, it is necessary to swing the knife seat 32 relative to the upper driving member 31 in the vertical direction by a preset angle, that is, adjust the cooperation angle of the upper cutter 33 relative to the lower cutter 24, realize the point contact between the upper cutter 33 and the lower cutter 24, and achieve the purpose of smooth paper cutting.

[0062] The angle adjustment member 34 includes a sliding member 341 and an adjustment plate 342 fixedly connected to the sliding member 341, the sliding member 341 is slidably connected to the upper driving member 31, the adjustment plate 342 is provided with a long hole 3421, and the external screw passes through the long hole 3421 and is screwed to the upper knife seat 32. Preferably, the sliding member 341 includes a guide rod 3411, a guide sleeve 3412 and a spring 3413, the guide sleeve 3412 is fixedly connected to the upper driving member 31, one end of the guide rod 3411 is fixedly connected to the adjustment plate 342, the other end of the guide rod 3411 is slidably connected to the guide sleeve 3412, and the spring 3413 The two ends of 3 are fixedly connected to the guide rod 3411 and the guide sleeve 3412 respectively, and the upper driving member 31 drives the upper knife seat 32 and the adjustment plate 342 to rise and fall synchronously, and the guide rod 3411 slides out of the upper driving member 31, so that the upper knife seat 32 reaches a preset position, and then the upper knife seat 32 is rotated to a preset angle and then the upper knife seat 32 is fixed to the adjustment plate 342 with a screw, that is, the purpose of adjusting the swing angle of the upper knife seat 32 is achieved by adjusting the position of the external screw passing through the long hole 3421, that is, the point contact effect of adjusting the upper cutting knife 33 and the lower cutting knife 24 is achieved, and the number of the long holes 3421 is two, so as to achieve the effect of stable connection.

[0063] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A cutting knife device for a slitting machine, comprising a frame (1), a lower cutting knife assembly (2) and a plurality of upper cutting knife assemblies (3), characterized in that: The upper cutter assembly (3) comprises an upper cutter (33), the lower cutter assembly (2) comprises a lower drive source (21), a transmission shaft (22), a plurality of bearing members (23) and a plurality of lower cutters (24), and the lower cutters (24) are ring-shaped; The lower driving source (21) is disposed on the frame (1) and drives the transmission shaft (22) to rotate; the transmission shaft (22) is rotatably connected to the frame (1); A plurality of the bearing members (23) are arranged in sequence along the length direction of the transmission shaft (22); Each of the carriers (23) is provided with an annular groove (2301), the lower cutter (24) is accommodated in the annular groove (2301), the lower cutter (24) is detachably connected to the carrier (23), and a lower cutter (24) cooperates with an upper cutter (33) to cut paper; An annular groove (2301) is located directly below an upper cutter (33); A plurality of upper cutter assemblies (3) are arranged on the frame (1) in parallel with each other, and a center line of the plurality of upper cutter assemblies (3) is arranged in parallel with an axis of a transmission shaft (22); the transmission shaft (22) comprises a left shaft sleeve (221), a middle shaft (222) and a right shaft sleeve (223); the left shaft sleeve (221) and the right shaft sleeve (223) are respectively arranged at two ends of the middle shaft (222) in a length direction; the left shaft sleeve (221) is detachably connected to the middle shaft (222); the right shaft sleeve (223) is detachably connected to the middle shaft (222); the left shaft sleeve (221) is rotatably connected to the frame (1) The frame (1) is provided with a right shaft sleeve (223) which is rotatably connected to the frame (1); the left shaft sleeve (221), the middle shaft (222) and the right shaft sleeve (223) are coaxially arranged; the left shaft sleeve (221) is provided with a left locking portion (2211); the middle shaft (222) is provided with a left tapered hole (2221); the left locking portion (2211) is in a truncated cone shape; the left locking portion (2211) is embedded in the left tapered hole (2221) and is interference-fitted with the left tapered hole (2221); the right shaft sleeve (223) is provided with a right locking portion (2231); the middle shaft (222) is provided with a right tapered hole (2221); The right locking portion (2231) is in the shape of a truncated cone, and the right locking portion (2231) is embedded in the right conical hole (2222) and is interference-fitted with the right conical hole (2222); the cutting knife device of the slitting machine also includes an adjustment mechanism (4), the adjustment mechanism (4) is connected to the left shaft sleeve (221), and the adjustment mechanism (4) is used to adjust the connection tightness between the left shaft sleeve (221) and the middle shaft (222); the adjustment mechanism (4) includes a hand wheel (41), a screw (42), a screw seat (43), a screw connecting sleeve (44), a sliding shaft (45) and a fixed sleeve ( 46); the fixed sleeve (46) is fixedly connected to the frame (1), the sliding shaft (45) is slidably connected to the fixed sleeve (46), the left shaft sleeve (221) is rotatably connected to the sliding shaft (45), the lead screw connecting sleeve (44) and the sliding shaft (45) are fixedly connected, one end of the lead screw (42) is fixedly connected to the lead screw connecting sleeve (44), the other end of the lead screw (42) is fixedly connected to the hand wheel (41), the lead screw (42) is screwed to the lead screw seat (43), and the lead screw seat (43) is fixedly connected to the frame (1); the frame includes a crossbeam (11), and the crossbeam (11) is arranged parallel to the transmission shaft (22); Each of the upper cutter assemblies (3) further comprises an upper drive member (31) and an upper cutter seat (32), wherein the upper drive member (31) is slidably connected to the crossbeam (11), and the upper drive member (31) drives the upper cutter seat (32) to move in a direction approaching or away from the lower cutter assembly (2), and the upper cutter (33) is fixedly connected to an end of the upper cutter seat (32) away from the upper drive member (31); each of the upper cutter assemblies (3) further comprises an angle adjustment member (34), wherein the angle adjustment member (34) is arranged between the upper drive member (31) and the upper cutter seat (32), wherein the angle adjustment member (34) is slidably connected to the upper drive member (31), and the upper cutter seat (32) is rotatably connected to the angle adjustment member (34).

2. The cutting knife device of the slitting machine according to claim 1, characterized in that: Each of the carriers (23) comprises a left clamping member (231), a lower knife seat (232) and a right clamping member (233); the left clamping member (231) is detachably connected to the transmission shaft (22); the lower knife seat (232) is detachably connected to the transmission shaft (22); the right clamping member (233) is detachably connected to the transmission shaft (22); the lower cutting knife (24) is fixedly connected to the lower knife seat (232); the annular groove (2301) is provided on the right clamping member (233) or the left clamping member (231); the annular groove (2301) is provided close to the lower knife seat (232); and the lower knife seat (232) is clamped between the left clamping member (231) and the right clamping member (233).

3. The cutting knife device of the slitting machine according to claim 2, characterized in that: The left clamping member (231) is annularly sleeved on the transmission shaft (22), the lower knife seat (232) is annularly sleeved on the transmission shaft (22), and the right clamping member (233) is annularly sleeved on the transmission shaft (22).

4. The cutting knife device of the slitting machine according to claim 1, characterized in that: The angle adjustment member (34) comprises a sliding member (341) and an adjustment plate (342) fixedly connected to the sliding member (341); the sliding member (341) is slidably connected to the upper driving member (31); the adjustment plate (342) is provided with a long hole (3421); an external screw passes through the long hole (3421) and is screwed to the upper knife seat (32).

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