A kraft paper production slitting machine

Abstract

The invention relates to the technical field of paper slitting, and specifically discloses a kraft paper production slitting machine, comprising a frame, a rotating shaft is rotatably installed inside the frame, a plurality of slitting knives are installed on the outer wall of the rotating shaft, and also comprises: a pitch variable module body and a pitch variable adjustment rod, the pitch variable module body is fixedly installed in the rotating shaft of a hollow structure, and the pitch variable adjustment rod is rotatably installed inside the pitch variable module body; a sliding hole, the sliding hole is arranged on the outer wall of the rotating shaft; a fixed block, the fixed block is fixed on the inner side of the slitting knife, and the slitting knife passes through the sliding hole through the fixed block and is fixed to a moving block on the pitch variable module body; a grinding mechanism, the grinding mechanism is respectively installed on the top of each slitting knife, and an operator only needs to rotate the pitch variable adjustment rod, and does not need to install and disassemble the slitting knife, so it is more convenient and safer when adjusting, and secondly, the slitting knife can be polished during use to ensure the sharpness of the slitting knife and improve the slitting effect of kraft paper.

Description

Technical Field

[0001] The invention relates to the technical field of paper slitting, in particular to a kraft paper production slitting machine. Background Art

[0002] Kraft paper has higher strength and tear resistance than ordinary paper. It is often used to make paper bags, envelopes, exercise books, record covers, files and sandpaper, etc. During the production process, a slitting machine is usually used to cut the wide material into the required small width.

[0003] The existing slitting machine is mainly composed of a frame, an unwinding mechanism, a traction mechanism, a slitting mechanism and a longitudinal cutting mechanism. The wide kraft paper is installed on the unwinding mechanism, and is pulled by the traction mechanism to maintain a certain tension. Then, the kraft paper is cut in turn through the slitting mechanism and the longitudinal cutting mechanism.

[0004] For the slitting mechanism, multiple slitting knives are fixed on a rotatable shaft (the distance between adjacent slitting knives is the required width of the kraft paper). The rotation of the shaft drives the slitting knives to rotate, thereby realizing the slitting of the kraft paper.

[0005] However, in actual use, the slitting knife is fixed to the rotating shaft by bolts, and the width of the kraft paper is adjusted according to production needs. Therefore, when the production task changes, the operator needs to adjust the distance between the slitting knives. During the adjustment process, the operator needs to remove and install the bolts on each slitting knife, which is cumbersome. In addition, the slitting knife is relatively sharp during the operation, which poses a certain threat to the personal safety of the operator. In addition, the slitting knife is worn during use, which affects the sharpness of the slitting knife and causes the cutting quality of the kraft paper to deteriorate.

[0006] For this purpose, we propose a slitting machine for kraft paper production. Summary of the invention

[0007] The object of the present invention is to provide a kraft paper production slitting machine to solve the problems mentioned in the above background technology that the existing slitting knife is inconvenient and unsafe to adjust, and the wear of the slitting knife during use will affect the cutting quality of the kraft paper.

[0008] To achieve the above object, the present invention provides the following technical solution: a kraft paper production slitting machine, comprising a frame, a rotating shaft is rotatably installed inside the frame, and a plurality of slitting knives are installed on the outer wall of the rotating shaft, and further comprising:

[0009] A pitch-variable module body and a pitch-variable adjustment rod, wherein the pitch-variable module body is fixedly installed in a rotating shaft of a hollow structure, and the pitch-variable adjustment rod is rotatably installed inside the pitch-variable module body;

[0010] A sliding hole, which is provided on the outer wall of the rotating shaft;

[0011] A fixed block is fixed on the inner side of the slitting knife, and the slitting knife passes through the sliding hole of the fixed block and is fixed to the moving block on the main body of the variable pitch module;

[0012] A grinding mechanism is respectively installed on the top of each slitting knife.

[0013] Wherein, mounting seats are respectively installed at both ends of the rotating shaft, and the rotating shaft is installed inside the frame through the mounting seats. A driving wheel is fixedly installed on the outer wall of the rotating shaft, and the driving wheel is connected to the driving mechanism.

[0014] The end of the variable pitch adjustment rod is provided with a socket, the inner wall of the socket is provided with a limit groove, a plug rod is slidably installed inside the socket, a limit block is fixedly installed on the outer wall of the plug rod, the plug rod is installed in the socket through the limit block, a spring is fixedly installed inside the socket, and the other end of the spring is fixed to the end of the plug rod;

[0015] The outer wall of the insertion rod is fixedly installed with a latching tooth, and the end of the pitch-changing module body is fixedly installed with a gear ring.

[0016] Among them, bearings are fixedly installed at both ends of the slitting knife, and connecting plates are fixedly installed on the outer rings of the bearings. The grinding mechanism is installed between the two connecting plates, and the connecting plates are slidably installed on the inner side of the frame;

[0017] The grinding mechanism consists of an electromagnet and a grinding head. The electromagnet is fixed between the connecting plates, and the grinding head is fixed at the bottom of the electromagnet.

[0018] A slider is fixedly installed on the side of the connecting plate, a slide rail is slidably installed on the outer side of the slider, the slide rail is fixed on the inner side of the frame, a scale line is provided on the side of one side of the slide rail, and a pointer is fixedly installed on the side of the electromagnet.

[0019] Among them, photoelectric sensors are installed on the sides of the connecting plates, a retractable conductor is provided on one side of the slitting knife, a rewinding mechanism is installed at the tail of the frame, the rewinding mechanism adjusts the length of the conductor according to the width of the kraft paper, a connector is installed between the conductor and the electromagnet, and the electromagnet and the photoelectric sensor are slidably installed on the conductor through the connector.

[0020] The conductor includes a plurality of sliding conductive blocks, each conductive block has a first connecting rod and a second connecting rod rotatably mounted on the bottom, the first connecting rod and the second connecting rod are cross-arranged, and the first connecting rod is rotatably connected to the second connecting rod on the adjacent conductive block.

[0021] The unwinding mechanism includes a transmission mechanism fixed on the side of the frame, a screw is fixedly installed on the output end of the transmission mechanism, a threaded sleeve is threadedly connected to the outer side of the screw, a limit plate is fixedly installed on the bottom of the threaded sleeve, a limit rod is slidably installed inside the limit plate, a push rod is fixedly installed on the bottom of the limit plate, a movable block is fixedly installed on the other end of the push rod, and the movable block is rotatably connected to the first connecting rod and the second connecting rod at the edge;

[0022] A push rod is rotatably mounted on the end of the threaded sleeve.

[0023] Wherein, side plates are slidably mounted on both sides of the conductive block, the side plates are fixed on the inner side of the frame, and the movable block is slidably mounted on the outer side of the side plates.

[0024] A groove is provided inside the conductive block, the connector is composed of a connecting rod and a bump, the wires of the photoelectric sensor and the electromagnet are connected to the connecting rod, and the bump is fixed to the bottom of the connecting rod and slidably connected to the groove.

[0025] The present invention has at least the following beneficial effects:

[0026] When the operator adjusts the distance between the slitting knives, he only needs to turn the variable distance adjustment lever, and there is no need to install or disassemble the slitting knives. Therefore, it is more convenient and safer to adjust. Secondly, the slitting knives can be polished during use to ensure the sharpness of the slitting knives and improve the slitting effect of kraft paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall first-view structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the overall structure of the present invention from a second viewing angle;

[0029] Figure 3 It is a schematic diagram of the internal structure of the frame of the present invention;

[0030] Figure 4 It is a schematic diagram of the unwinding mechanism of the present invention;

[0031] Figure 5 This is a schematic diagram of the rotating shaft installation structure of the present invention;

[0032] Figure 6 This is a schematic diagram of the installation structure of the slitting knife of the present invention;

[0033] Figure 7 It is a schematic diagram of the side structure of the rotating shaft of the present invention;

[0034] Figure 8 This is a schematic diagram of the explosion structure for installing the slitting knife of the present invention;

[0035] Fig. 9This is a schematic diagram of the end structure of the variable pitch adjustment rod of the present invention;

[0036] Fig.10 It is a schematic diagram of the structure of the connection between the connector and the conductor of the present invention;

[0037] Fig.11 It is a schematic diagram of the back structure of the conductive block of the present invention.

[0038] In the figure: 1, frame; 2, rotating shaft; 3, slitting knife; 4, pitch module body; 5, pitch adjustment rod; 6, sliding hole; 7, fixing block; 8, grinding mechanism; 9, mounting seat; 10, driving wheel; 11, plug hole; 12, limit groove; 13, plug rod; 14, limit block; 15, spring; 16, clamping tooth; 17, gear ring; 18, bearing; 19, connecting plate; 20, electromagnet; 21, grinding head; 22, slider; 23, slider Rail; 24, scale line; 25, pointer; 26, photoelectric sensor; 27, conductor; 28, unwinding mechanism; 29, connector; 30, conductive block; 31, first connecting rod; 32, second connecting rod; 33, transmission mechanism; 34, screw; 35, threaded sleeve; 36, limit plate; 37, limit rod; 38, push rod; 39, movable block; 40, push rod; 41, side plate; 42, groove; 43, connecting rod; 44, bump. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Embodiment 1

[0041] See also Figures 1 to 11 The present invention provides a technical solution: a kraft paper production slitting machine, comprising: a frame 1, a rotating shaft 2 is rotatably installed on the inner side of the frame 1, specifically, mounting seats 9 are installed at both ends of the rotating shaft 2, and the mounting seats 9 are fixed on the inner side of the frame 1, and a driving wheel 10 is also fixed at one end of the rotating shaft 2, and the driving wheel 10 is connected to the driving mechanism of the slitting machine, and the driving mechanism drives the driving wheel 10 to rotate, thereby driving the rotating shaft 2 to rotate.

[0042] A plurality of slitting knives 3 are fixedly mounted on the outer wall of the rotating shaft 2, and the plurality of slitting knives 3 are equidistantly arranged. First, a sliding hole 6 is opened on the outer wall of the rotating shaft 2, and secondly, a fixed block 7 is fixedly mounted on the inner side of the slitting knife 3. The slitting knife 3 is slidably mounted in the sliding hole 6 through the fixed block 7. At the same time, a variable pitch module body 4 is fixedly mounted inside the rotating shaft 2, and a variable pitch adjustment rod 5 is rotatably mounted inside the variable pitch module body 4. When the variable pitch adjustment rod 5 is rotated, the moving blocks on the variable pitch module body 4 can move at the same time, gradually changing the distance between adjacent moving blocks, and the fixed block 7 on the inner side of the slitting knife 3 is fixed on the moving block on the variable pitch module body 4.

[0043] Therefore, through the above technical solution, when the variable pitch adjustment rod 5 is rotated, the distance between the moving blocks on the variable pitch module body 4 is adjusted, and when the moving block slides, the slitting knife 3 is synchronously driven to slide in the sliding hole 6, so as to adjust the distance between the slitting knives 3. When slitting kraft paper of different widths, it is only necessary to rotate the variable pitch adjustment rod 5 without disassembling the slitting knife 3, and the adjustment process is more convenient and safe.

[0044] It should be added that the existing variable pitch adjustment rod 5 generally has a plurality of inclined grooves of different lengths. When the variable pitch adjustment rod 5 is rotated, the moving block slides in the inclined groove. Therefore, when the moving block is subjected to axial pressure, the variable pitch adjustment rod 5 will also rotate. In order to ensure that the slitting knife 3 is not affected by external forces during the slitting process and always maintains the adjusted position, a socket 11 is provided at the end of the variable pitch adjustment rod 5, and a spring 15 is fixedly installed inside the socket 11. At the same time, a limiting groove 12 is provided on the inner side of the socket 11, and a plug rod 13 is also inserted into the socket 11. A limiting block 14 adapted to the limiting groove 12 is fixedly installed on the outer side of the plug rod 13. At the same time, a latch tooth 16 is fixedly installed on the outer side of the plug rod 13. A gear ring 17 is fixedly installed at the end of the variable pitch module body 4, and the latch tooth 16 and the gear ring 17 can mesh with each other.

[0045] By means of the above technical scheme, after the slitting knife 3 is adjusted, the plug rod 13 is inserted into the insertion hole 11, and the spring 15 is not subjected to force, and the latching tooth 16 is engaged with the inner side of the ring gear 17. If the slitting knife 3 is subjected to external force, there is a tendency to drive the variable pitch adjustment rod 5 to rotate. When the variable pitch adjustment rod 5 rotates, the plug rod 13 will be driven to rotate synchronously. However, at this time, the latching tooth 16 is engaged with the ring gear 17, and the plug rod 13 will not rotate, that is, the variable pitch adjustment rod 5 will not rotate, thereby limiting the position of the slitting knife 3, so that it always remains in the adjusted position, avoiding the influence of external force. The distance between the slitting knives 3 is affected, and the slitting quality of the kraft paper is improved. When the distance between the slitting knives 3 needs to be adjusted, only the insertion rod 13 needs to be pulled. At this time, the insertion rod 13 slides in the limiting groove 12 through the limiting block 14, and the spring 15 is stretched. When the locking tooth 16 is pulled to separate from the gear ring 17, the variable distance adjustment rod 5 is not restricted. When the insertion rod 13 is rotated, the insertion rod 13 drives the variable distance adjustment rod 5 to rotate normally through the cooperation of the limiting block 14 and the limiting groove 12, so as to adjust the distance between the slitting knives 3.

[0046] A grinding mechanism 8 is provided on the top of each slitting knife 3, and the grinding mechanism 8 can grind the slitting knife 3 to improve the sharpness of the slitting knife 3. First, bearings 18 are installed at both ends of each slitting knife 3, and the outer ring of the bearing 18 is fixedly connected to a connecting plate 19, and the grinding mechanism 8 is fixed between the two connecting plates 19. The grinding mechanism 8 includes an electromagnet 20 fixed between the connecting plates 19, and a grinding head 21 is fixedly installed at the bottom of the electromagnet 20. At the same time, a slider 22 is fixedly installed at the end of the connecting plate 19, and a slide rail 23 is slidably installed on the outer side of the slider 22, and the end of the slide rail 23 is fixed on the inner side of the frame 1.

[0047] Through the above technical solution, when the distance between the slitting knives 3 is adjusted, the connecting plate 19 will be driven to move synchronously, so that the connecting plate 19 slides in the slide rail 23 through the slider 22, ensuring that the grinding mechanism 8 can move synchronously when the slitting knife 3 moves, so that it is always located on the top of the slitting knife 3. After cutting the cowhide, the operator can start the electromagnet 20. After being energized, the electromagnet 20 drives the grinding head 21 to contact the slitting knife 3. When the slitting knife 3 rotates, it contacts the grinding head 21 to grind the slitting knife 3, ensure the sharpness of the slitting knife 3, and further improve the slitting effect of kraft paper.

[0048] It should be added that a scale line 24 is sprayed on the side of the slide rail 23, and a pointer 25 is fixedly installed on each electromagnet 20. Since the electromagnet 20 moves synchronously with the movement of the slitting knife 3, the distance between the electromagnets 20 is the distance between the slitting knives 3. Therefore, when the operator adjusts the distance between the slitting knives 3, the position of the pointer 25 on the scale line 24 can be used to determine the distance between the slitting knives 3, which makes the adjustment of the distance between the slitting knives 3 more accurate.

[0049] Embodiment 2

[0050] In the first embodiment, the electromagnet 20 is activated after the slitting of the kraft paper is completed. However, in the actual cutting process, not all the slitting knives 3 are involved in the cutting. For example, if the width of the kraft paper is relatively large, if the electromagnet 20 is activated at the same time, the slitting knives 3 that are not involved in the cutting will be polished, which will result in excessive polishing of the slitting knives 3 and will also affect the cutting effect of the slitting knives 3.

[0051] Therefore, in view of the above situation, firstly, a photoelectric sensor 26 is set on the side of each electromagnet 20, and the photoelectric sensor 26 detects the number of rotations of the rotating shaft 2, and controls the action of the electromagnet 20 by the number of rotations. That is to say, when the number of rotations of the rotating shaft 2 reaches the threshold, the electromagnet 20 will act to grind the slitting knife 3, so that it can change the sharpness of the slitting knife 3 more timely. Secondly, a retractable conductor 27 is set on one side of the rotating shaft 2. The conductor 27 forms a closed loop with the power supply, and a connector 29 is installed on the electromagnet 20. The connector 29 can connect the photoelectric sensor 26 and the electromagnet 20 in series to the closed loop, and power the electromagnet 20 and the photoelectric sensor 26. Then, a reeling mechanism 28 is installed at the tail of the frame 1, and the reeling mechanism 28 can adjust the length of the conductor 27 according to the width of the kraft paper.

[0052] Therefore, through the above scheme, when the unwinding mechanism 28 installs the rolled kraft paper, the length of the conductor 27 is adjusted according to the width of the kraft paper so that the length of the conductor 27 is consistent with the width of the kraft paper. Then, the distance between the slitting knives 3 is adjusted according to production needs. During the adjustment process, part of the slitting knives 3 does not participate in the cutting, that is, part of the slitting knives 3 are not on the conductor 27. The electromagnet 20 and the photoelectric sensor 26 that are not on the conductor 27 will not form a circuit and will not work. Therefore, when grinding, the grinding mechanism 8 located on the outside of the conductor 27 will not grind the slitting knife 3, thereby avoiding excessive grinding of the slitting knife 3.

[0053] Specifically, the conductor 27 is composed of a plurality of conductive blocks 30, and a side plate 41 is slidably installed on the outer side of the conductive block 30, and the side plate 41 is fixed on the inner side of the frame 1, and the back side of the conductive block 30 is rotatably installed with a first connecting rod 31 and a second connecting rod 32, and the first connecting rod 31 and the second connecting rod 32 are cross-arranged. When the outermost conductive block 30 is pushed, the angle of the first connecting rod 31 and the second connecting rod 32 is changed, so that the distance between the conductors 27 can also be changed, thereby realizing the overall extension and retraction of the conductor 27.

[0054] The connector 29 is composed of a connecting rod 43 and a protrusion 44. The wires of the photoelectric sensor 26 and the electromagnet 20 are connected to the protrusion 44 through the connector 29. The protrusion 44 slides in the groove 42 inside the conductor 27. The connector 29 can slide in the groove 42 inside the conductive block 30 through the protrusion 44.

[0055] The unwinding mechanism 28 includes a transmission mechanism 33 fixed to one side of the frame 1, a screw rod 34 is fixedly installed at the end of the transmission mechanism 33, a threaded sleeve 35 is threadedly connected to the end of the screw rod 34, a push rod 40 is rotatably installed at the end of the threaded sleeve 35, a limit plate 36 is fixedly installed at the bottom of the threaded sleeve 35, and a limit rod 37 is slidably installed inside the limit rod 37, the limit rod 37 is fixed to the inner side of the frame 1, and a push rod 38 is fixedly installed at the bottom of the limit plate 36, and a movable block 39 is fixed to the other end of the push rod 38, the movable block 39 is rotatably connected to the first connecting rod 31 and the second connecting rod 32 at the edge, and the movable block 39 is slidably installed on the outside of the side plate 41.

[0056] Through the above technical solution, when the rolled kraft paper needs to be installed, the kraft paper is lifted to the same height as the top rod 40 by a forklift, and then the transmission mechanism 33 is started to drive the screw 34 to rotate. When the screw 34 rotates, it drives the threaded sleeve 35 to slide on the limit rod 37 until the top rod 40 at the end of the threaded sleeve 35 is inserted into the interior of the kraft paper, thereby realizing the installation of the kraft paper. When the width of the kraft paper is smaller, the sliding distance of the threaded sleeve 35 is larger, that is, the moving distance of the limit plate 36 is larger, and the limit plate 36 will also drive the push rod 38 to move while moving. When the push rod 38 moves, it drives the movable block 39 to slide on the cross plate, thereby changing the length of the conductor 27.

[0057] After the length is changed, the operator adjusts the distance between the slitting knives 3. The slitting knives 3 slide in the conductive block 30 through the connector 29 when moving. After the adjustment is completed, the slitting knives 3 that do not participate in slitting are not in the closed loop, and the photoelectric sensor 26 does not detect the number of rotations of the rotating shaft 2. Therefore, the working time of each slitting knife 3 is independent and separated. The slitting knife 3 is polished according to the threshold of the working time, that is, the threshold of the number of rotations of the rotating shaft 2.

[0058] It should be added that the protrusion 44 and the conductive block 30 can conduct electricity, but since the distance between the conductive blocks 30 is adjustable, when the distance between the conductive blocks 30 is larger, the protrusion 44 may not contact the conductive block 30. Therefore, the length of the protrusion 44 and the pushing stroke of the push rod 38 can be set by yourself to ensure that the protrusion 44 can always contact the conductive block 30 when the conductor 27 is extended or retracted. The conduction between the conductive blocks 30 and the conductive blocks 30 is achieved through the first connecting rod 31, that is, when the current passes through the conductive block 30, it will be transferred to the adjacent conductive block 30 through the first connecting rod 31, so that all the conductive blocks 30 are energized, and secondly, the conductor 27 is charged. For the safety of the operation, an insulating protection structure, such as an insulating cover, can be provided on the outside of the conductor 27 to improve the safety of the use of the slitting machine.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A kraft paper production slitting machine, comprising a frame (1), a rotating shaft (2) rotatably mounted inside the frame (1), a plurality of slitting knives (3) mounted on the outer wall of the rotating shaft (2), characterized in that: Also includes: A pitch-changing module body (4) and a pitch-changing adjustment rod (5), wherein the pitch-changing module body (4) is fixedly mounted in a rotating shaft (2) of a hollow structure, and the pitch-changing adjustment rod (5) is rotatably mounted inside the pitch-changing module body (4); a plug hole (11) is provided at the end of the pitch-changing adjustment rod (5), a limit groove (12) is provided on the inner wall of the plug hole (11), an insertion rod (13) is slidably mounted inside the plug hole (11), a limit block (14) is fixedly mounted on the outer wall of the insertion rod (13), the insertion rod (13) is mounted in the plug hole (11) through the limit block (14), a spring (15) is fixedly mounted inside the plug hole (11), the other end of the spring (15) is fixed to the end of the insertion rod (13), a latch tooth (16) is fixedly mounted on the outer wall of the insertion rod (13), and a gear ring (17) is fixedly mounted on the end of the pitch-changing module body (4); A sliding hole (6), wherein the sliding hole (6) is formed on the outer wall of the rotating shaft (2); A fixed block (7), the fixed block (7) being fixed on the inner side of the slitting knife (3), the slitting knife (3) passing through the sliding hole (6) through the fixed block (7) and being fixed to the moving block on the pitch-changing module body (4); A grinding mechanism (8), wherein the grinding mechanism (8) is respectively mounted on the top of each slitting knife (3), bearings (18) are fixedly mounted at both ends of the slitting knife (3), and connecting plates (19) are fixedly mounted on the outer rings of the bearings (18). The grinding mechanism (8) is mounted between the two connecting plates (19), and the connecting plates (19) are slidably mounted on the inner side of the frame (1). The grinding mechanism (8) is composed of an electromagnet (20) and a grinding head (21), and the electromagnet (20) is fixed between the connecting plates (19), and the grinding head (21) is fixed to the bottom of the electromagnet (20). A slider (22) is fixedly mounted on the side of the connecting plate (19), and a slide rail (23) is slidably mounted on the outer side of the slider (22), and the slide rail (23) is fixed on the inner side of the frame (1), and a scale mark (24) is provided on the side of the slide rail (23). A pointer (25) is fixedly mounted on the side of the electromagnet (20); A photoelectric sensor (26) is installed on the side of the connecting plate (19), a retractable conductor (27) is provided on one side of the slitting knife (3), a reeling mechanism (28) is installed at the tail of the frame (1), the reeling mechanism (28) adjusts the length of the conductor (27) according to the width of the kraft paper, a connector (29) is installed between the conductor (27) and the electromagnet (20), and the electromagnet (20) and the photoelectric sensor (26) are slidably installed on the conductor (27) via the connector (29).

2. The kraft paper production slitting machine according to claim 1, characterized in that: Mounting seats (9) are respectively installed at both ends of the rotating shaft (2); the rotating shaft (2) is installed inside the frame (1) via the mounting seats (9); a driving wheel (10) is fixedly installed on the outer wall of the rotating shaft (2); and the driving wheel (10) is connected to the driving mechanism.

3. The kraft paper production slitting machine according to claim 1, characterized in that: The conductor (27) comprises a plurality of slidably arranged conductive blocks (30), a first connecting rod (31) and a second connecting rod (32) being rotatably mounted on the bottom of each conductive block (30), the first connecting rod (31) and the second connecting rod (32) being arranged crosswise, and the first connecting rod (31) being rotatably connected to the second connecting rod (32) on an adjacent conductive block (30).

4. The kraft paper production slitting machine according to claim 3, characterized in that: The unwinding mechanism (28) comprises a transmission mechanism (33) fixed to a side of the frame (1); a screw rod (34) is fixedly mounted on an output end of the transmission mechanism (33); a threaded sleeve (35) is threadedly connected to the outer side of the screw rod (34); a limit plate (36) is fixedly mounted on the bottom of the threaded sleeve (35); a limit rod (37) is slidably mounted inside the limit plate (36); a push rod (38) is fixedly mounted on the bottom of the limit plate (36); a movable block (39) is fixedly mounted on the other end of the push rod (38); and the movable block (39) is rotatably connected to a first connecting rod (31) and a second connecting rod (32) at an edge. A push rod (40) is rotatably mounted on the end of the threaded sleeve (35).

5. The kraft paper production slitting machine according to claim 4, characterized in that: Side plates (41) are slidably mounted on both sides of the conductive block (30); the side plates (41) are fixed on the inner side of the frame (1); and the movable block (39) is slidably mounted on the outer side of the side plates (41).

6. The kraft paper production slitting machine according to claim 3, characterized in that: A groove (42) is formed inside the conductive block (30), the connector (29) is composed of a connecting rod (43) and a protrusion (44), the conductive wires of the photoelectric sensor (26) and the electromagnet (20) are connected to the connecting rod (43), and the protrusion (44) is fixed to the bottom of the connecting rod (43) and is slidably connected to the groove (42).

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