An automatic shaft feeding, shaft pulling and paper tube threading mechanism

Abstract

An automatic shaft loading, shaft pulling and paper tube threading mechanism, characterized in that: it includes a vertical frame mechanism capable of moving back and forth on a track mechanism, a horizontal guiding mechanism installed on the elevator of the vertical frame mechanism, a clamping air charging and discharging device installed on the horizontal guiding mechanism and capable of moving left and right along the horizontal guiding mechanism, an air circuit control mechanism installed on the horizontal guiding mechanism, and a paper tube threading positioning device located on one side of the vertical frame mechanism. The present invention is applicable to the situation where the slitter can load the shaft from the side and the relative position of the cloth roll can be fixed after slitting and unloading the roll. After use, it can reduce the number of operators and greatly reduce the manual labor intensity, realizing the functions of automatic shaft loading, shaft pulling and paper tube threading of the slitter.

Description

Technical Field

[0001] The present invention relates to the technical field of textile technology, and specifically relates to an automatic shaft loading, shaft pulling and paper tube threading mechanism applicable to a non-woven fabric slitter. Background Art

[0002] A slitter is used to cut a large roll of coil into strip sub-rolls of different width specifications required by customers. Generally, the slitting speed is about 300 m / min, and a higher speed can reach more than 1000 m / min. The diameter of the sub-rolls after slitting is generally 1200 mm. After slitting, the core shaft of the sub-roll must be pulled out and a paper tube must be put on the core shaft again for later use. At present, the core shaft of the sub-roll after slitting and rewinding needs to be manually pulled out. Since the length of the core shaft of the wide-width slitting and winding equipment is close to 4 m and the weight is about 120 kg, generally 2 to 4 people are needed to assist in the operation each time the core shaft is replaced. After the core shaft is pulled out and lifted down, the slit paper tubes are put on the core shaft one by one, and then inflated and tightened for standby. Therefore, the work of replacing the core shaft and threading the paper tube not only has a large labor intensity and low efficiency, but also requires a large number of personnel per shift. With the continuous increase in the single-line production capacity of the non-woven fabric production line, the labor intensity of manually replacing the core shaft has increased greatly, and there is an urgent need for automation substitution. Summary of the Invention

[0003] The purpose of the present invention is precisely to provide an automatic shaft loading, shaft pulling and paper tube threading mechanism for the deficiencies existing in the above-mentioned prior art. The present invention can not only reduce the number of operators and greatly reduce the manual labor intensity, realize the functions of automatic shaft loading, shaft pulling and paper tube threading of the slitter, so as to realize the full-process automation and intelligence of the non-woven fabric production line, and promote industrial upgrading and technological progress.

[0004] The purpose of the present invention can be achieved by the following technical measures:

[0005] The automatic shaft loading, shaft pulling and paper tube threading mechanism of the present invention includes a vertical frame mechanism capable of moving back and forth on a track mechanism, a horizontal guiding mechanism installed on the elevator of the vertical frame mechanism, a clamping, inflating and deflating device installed on the horizontal guiding mechanism and capable of moving left and right along the horizontal guiding mechanism, a gas circuit control mechanism installed on the horizontal guiding mechanism, and a paper tube threading positioning device located on one side of the vertical frame mechanism.

[0006] Furthermore, the track mechanism includes left and right horizontal guide rails installed on the horizontally arranged left and right track plates through fixed connectors, a rack arranged between the left and right guide rails in a parallel manner, and a horizontal drag chain guiding groove arranged outside one of the track plates in a manner parallel to the track plate; one end of a horizontal drag chain for arranging various wire harnesses located in the horizontal drag chain guiding groove is combined with the vertical frame mechanism, and the other end is combined with the rear end of the horizontal drag chain guiding groove.

[0007] The frame mechanism includes a frame mechanism support platform installed on a guide rail slider that cooperates with the left and right guide rails, a guide frame installed on the frame mechanism support platform, an elevator installed on the frame mechanism support platform for driving the horizontal guide mechanism to perform lifting movements along the guide frame, a gear installed on the frame mechanism support platform and driven by a variable frequency brake motor and meshing with a rack, and two limit columns located on the left and right sides of the frame mechanism support platform; the height of the limit columns is the lower dead point of the horizontal guide mechanism for the descending movement; left and right lifting guide rails are respectively provided on both sides of the guide frame, and the left and right lifting guide rails are respectively combined with the left and right supports for placing the horizontal guide mechanism through sliders; a vertical drag chain guide groove is installed on one side of the guide frame, and the upper end of the vertical drag chain for arranging various wiring harnesses located in the vertical drag chain guide groove is combined with the horizontal guide mechanism, and the lower end is combined with the lower end of the vertical drag chain guide groove.

[0008] The horizontal guide mechanism includes left and right supports respectively matched with the lifting guide rails through sliders, a guide frame installed on the left and right supports, upper and lower guide rails installed on the front side of the guide frame, a rack installed parallel to the bottom of the upper guide rail, left and right drag chain guide grooves arranged side by side at the top of the guide frame along the length direction of the guide frame, left and right drag chains arranged in the left and right drag chain guide grooves for arranging various wiring harnesses, and a plurality of guide wheels arranged below the front part of the lower guide rail along the length direction of the guide frame, a guide rail guard plate is provided below the guide wheel, and a guide cylinder for pushing the paper tube core shaft into the slitting machine to position the paper tube core shaft is provided at the outer end of the guide wheel located at the rightmost end.

[0009] The clamping and inflation / deflation device includes a mounting frame installed with a servo motor, which is combined with the upper and lower guide rails of the horizontal guide mechanism and is installed through a slider. The mounting frame is driven by the servo motor and moves left and right along the upper and lower guide rails of the horizontal guide mechanism through a gear meshing with the rack; the mounting frame is composed of left and right frames solidified by a connecting frame, and a clamping seat is installed on the right frame of the mounting frame through vertically arranged mutually cooperating guide rail sliders and a lifting cylinder; left and right linkage blocks connected by a linkage shaft are installed on the clamping seat, and the linkage shaft is driven by the supporting arm opening and closing cylinder, driving the left and right supporting arms arranged at the outer ends of the left and right linkage blocks and driven by the left and right meshing gear sets to realize opening and closing movement; a rodless cylinder is installed under the clamping seat, and an air distributor is installed on the rodless cylinder, and inflation and deflation positioning pressure rings are installed on the left and right of the air distributor. The rodless cylinder is mainly used to drive the air distributor block and the left and right inflation and deflation positioning pressure rings to move left and right and cooperate with the core shaft end to realize inflation and deflation of the core shaft; the air distributor block is mainly used to separate the air path for inflation and deflation of the left and right inflation and deflation positioning pressure rings, and the left and right inflation and deflation positioning pressure rings are mainly used to cooperate with the core shaft end for positioning.

[0010] The air path control mechanism for controlling the actions of all cylinders is installed on the guide frame of the horizontal guide mechanism.

[0011] The paper tube threading positioning device includes a bracket, a V-shaped groove for placing paper tubes installed on the bracket through left and right cylinders located at both ends, a guide rail installed on a cross beam connected to the bracket by bearings, and a partition plate with a handle connected to the slider of the guide rail by a connecting piece; under the action of the left and right cylinders and the bearings, different lengths of paper tubes are separated by the partition plate by adjusting the distance between the sliders, and the height of the handle adjusting wire is adjusted to fix the slider so as to fix the partition plate, facilitating the penetration of the mandrel.

[0012] The present invention is applicable to the situation where the slitter can perform side shaft loading and the relative positions of the cloth rolls can be fixed after slitting and unwinding. The specific working method is as follows:

[0013] The automatic shaft loading, shaft pulling, and paper tube threading mechanism moves the vertical frame mechanism to a position near the core shaft of the sub-cloth roll by a variable frequency braking motor. The height and distance positions of the core shaft are detected by photoelectric sensors. After accurately positioning the core shaft, the servo motor moves the clamping and air charging / discharging device to the step of the core shaft and clamps it. The rodless cylinder aligns the air charging / discharging device with the air charging / discharging port at the end of the core shaft and discharges the air from the core shaft. After the air discharging is completed, the air charging / discharging device leaves the core shaft, and the servo motor starts to slowly pull out the core shaft. The pulled-out core shaft is supported by the guide wheels on the horizontal guiding mechanism. The servo motor continues to pull out the shaft until the core shaft is completely pulled out and placed on the supporting guide wheels. The clamping arm opening and closing cylinder of the clamping and air charging / discharging device acts to loosen the core shaft, and the clamping and air charging / discharging device leaves the end of the core shaft and returns to the other end position of the core shaft. The elevator descends, and the servo motor clamps the core shaft supported by the guide wheels on the horizontal guiding mechanism and transports it to the core shaft paper tube threading device. After automatic paper tube threading, the core shaft with the paper tube is clamped and inflated. After the inflation is completed, the air charging / discharging device leaves the core shaft, and the servo motor starts to slowly pull out the core shaft with the paper tube from the paper tube threading device. The pulled-out core shaft is supported by the guide wheels on the horizontal guiding mechanism. The servo motor continues to pull out the shaft until the core shaft is completely pulled out from the paper tube threading device and placed on the guide wheels on the horizontal guiding mechanism. The clamping arm opening and closing cylinder of the clamping and air charging / discharging device acts to loosen the core shaft, and the clamping and air charging / discharging device leaves the end of the core shaft and returns to the other end position of the core shaft. The elevator ascends, and the variable frequency braking motor moves the vertical frame mechanism to the core shaft waiting position of the slitter, waits for a signal, and the servo motor and the lifting cylinder together clamp the core shaft supported by the guide wheels on the horizontal guiding mechanism and transport it to the core shaft waiting place of the slitter, repeating the above actions.

[0014] The beneficial effects of the present invention are as follows:

[0015] When the core shaft is pulled out and a new paper tube is replaced after the cloth roll is slit by the slitter, it only needs to manually place the slit paper tubes at the paper tube threading device as required, saving more personnel, greatly reducing the labor intensity of workers, and truly realizing the automation and intelligence of automatic shaft loading, shaft pulling, and paper tube threading of the slitter. Description of the Drawings

[0016] Figure 1 It is the front view of the automatic upper shaft pulling and paper tube threading mechanism.

[0017] Figure 2 It is Figure 1 the top view of

[0018] Figure 3 It is Figure 1 the left view of

[0019] Figure 4 It is Figure 1 the perspective view of

[0020] Figure 5 It is the enlarged view of the clamping air charging and discharging device.

[0021] Serial numbers in the figure: 1 is the vertical frame mechanism, 2 is the horizontal guiding mechanism, 3 is the clamping air charging and discharging device, 4 is the air circuit control mechanism, 5 is the paper tube threading positioning device, 11 is the drag chain guiding groove, 12 is the track plate, 13 is the horizontal guide rail, 14 is the rack, 15 is the elevator, 16 is the limit vertical column, 17 is the support platform of the vertical frame mechanism, 18 is the variable frequency braking motor, 19 is the support, 20 is the lifting guide rail, 21 is the vertical drag chain guiding groove, 30 is the guiding frame, 31 is the guide rail guard plate, 32 is the guiding wheel, 33 is the guiding cylinder, 34 is the mandrel, 35 is the lower guide rail, 36 is the rack, 37 is the upper guide rail, 38 is the right drag chain guiding groove, 39 is the left drag chain guiding groove, 40 are the left and right clamping arms, 41 are the left and right meshing gear sets, 42 are the left and right linkage blocks, 43 is the guide rail, 44 is the clamping seat, 45 is the lifting cylinder, 46 is the clamping arm opening and closing cylinder, 47 is the servo motor, 48 is the mounting bracket, 49 is the air charging and discharging positioning pressure ring, 50 is the rodless cylinder, 51 is the air distribution block, 52 is the linkage shaft, 53 is the air charging and discharging nozzle, 54 is the spring, 60 is the handle, 61 is the partition board, 62 is the V-shaped groove, 63 is the guide rail, 64 are the left and right cylinders, 65 is the bracket. Specific implementation mode

[0022] The present invention will be further described below in conjunction with examples (drawings):

[0023] As Figures 1 to 4 shown, the automatic upper shaft pulling and paper tube threading mechanism of the present invention includes a vertical frame mechanism 1 capable of moving back and forth on the track mechanism, a horizontal guiding mechanism 2 installed on the elevator of the vertical frame mechanism, and a clamping air charging and discharging device 3 installed on the horizontal guiding mechanism 2 and capable of moving left and right along the horizontal guiding mechanism; an air circuit control mechanism 4 for controlling the actions of all cylinders is installed on the guiding frame 30 of the horizontal guiding mechanism 2, and a paper tube threading positioning device 5 is arranged on one side of the vertical frame mechanism 1.

[0024] Furthermore, the track mechanism includes left and right horizontal guide rails 13 installed on the horizontally arranged left and right track plates 12 through fixed connectors, a rack 14 arranged between the left and right guide rails in a parallel manner, and a horizontal drag chain guide groove 11 arranged outside one of the track plates 12 in a manner parallel to the track plate; one end of a horizontal drag chain for arranging various wire harnesses located in the horizontal drag chain guide groove 11 is combined with the vertical frame mechanism 1, and the other end is combined with the rear end of the horizontal drag chain guide groove.

[0025] The vertical frame mechanism 1 includes a vertical frame mechanism support platform 17 installed on a guide rail slider that cooperates with the left and right guide rails, a guiding vertical frame installed on the vertical frame mechanism support platform 17, a lift 15 installed on the vertical frame mechanism support platform 17 for driving the horizontal guiding mechanism 2 to move up and down along the guiding vertical frame, a gear installed on the vertical frame mechanism support platform and meshing with the rack 14 driven by a variable-frequency braking motor 18, and two limit columns 16 on the left and right on the vertical frame mechanism support platform 17; the height of the limit columns is the lower stop point for the downward movement of the horizontal guiding mechanism 2; left and right lifting guide rails 20 are respectively arranged on both sides of the guiding vertical frame, and the left and right lifting guide rails are respectively combined with left and right supports 19 for placing the horizontal guiding mechanism 2 through sliders; a vertical drag chain guide groove 21 is installed on one side of the guiding vertical frame, and the upper end of a vertical drag chain for arranging various wire harnesses located in the vertical drag chain guide groove is combined with the horizontal guiding mechanism 2, and the lower end is combined with the lower end of the vertical drag chain guide groove 21.

[0026] The horizontal guiding mechanism 2 includes left and right supports 19 respectively cooperating with the lifting guide rails 20 through sliders, a guiding frame 30 installed on the left and right supports 19, upper and lower guide rails 37, 35 installed on the front side of the guiding frame 30, a rack 36 installed parallel to the lower part of the upper guide rail 37, left and right drag chain guide grooves 39, 38 arranged side by side along the length direction of the guiding frame 30 at the top of the guiding frame, left and right drag chains for arranging various wire harnesses arranged in the left and right drag chain guide grooves, and a number of guide wheels 32 arranged below the front part of the lower guide rail 35 along the length direction of the guiding frame. A guide rail guard plate 31 is arranged below the guide wheels 32, and a guiding cylinder 33 for pushing the paper tube core shaft into the slitter to position the paper tube core shaft is arranged at the outer end of the rightmost guide wheel 32.

[0027] The clamping and deflation device 3 includes a mounting frame 48 mounted on the upper and lower guide rails 37 and 35 of the horizontal guide mechanism 2 through a slider, and is equipped with a servo motor 47. The mounting frame 48 is driven by the servo motor 47 and moves left and right along the upper and lower guide rails 37 and 35 of the horizontal guide mechanism 2 through a gear meshing with the rack 36; the mounting frame 48 is composed of left and right frames that are fixed together by a connecting frame, and is slidable on the right frame of the mounting frame 48 through a vertically arranged mutually cooperating guide rail 43. The block and the lifting cylinder 45 are installed with a clamping seat 44; the left and right linkage blocks 42 connected by the linkage shaft 52 are installed on the clamping seat 44, and the linkage shaft 52 is driven by the support arm opening and closing cylinder 46, which drives the left and right support arms 40 driven by the left and right meshing gear sets 41 at the outer ends of the left and right linkage blocks 42 to realize the opening and closing movement; a rodless cylinder 50 is installed below the clamping seat 44, and a gas distributor block 51 is installed on the rodless cylinder 50, and the gas distributor block 51 is installed with a gas charging and discharging positioning pressure ring 49 on the left and right (see Figure 5 The rodless cylinder 50 is mainly used to drive the air dividing block 51 and the left and right air-charging and air-discharging positioning pressure rings 49 to move left and right to cooperate with the end of the core shaft to realize the inflation and deflation of the core shaft; the air dividing block 51 is mainly used to separate the air path for the inflation and deflation of the left and right air-charging and air-discharging positioning pressure rings 49, and the left and right air-charging and air-discharging positioning pressure rings 49 are mainly used to cooperate with the end of the core shaft to realize the inflation and deflation of the core shaft.

[0028] The paper tube positioning device 5 includes a bracket 65, a V-shaped groove 62 for placing paper tubes installed on the bracket 65 through left and right cylinders 64 located at both ends, a guide rail 63 is installed on a crossbeam connected to the bracket 65 by a bearing, and a partition plate 61 connects the handle 60 and the slider of the guide rail 63 by a connecting piece; under the action of the left and right cylinders 64 and the bearings, the partition plate 61 is used to separate paper tubes of different lengths by adjusting the distance between the sliders, and the height of the wire is adjusted by the handle 60 to fix the slider to achieve the purpose of fixing the partition plate 61, thereby facilitating the insertion of the core shaft.

[0029] The working principle of the present invention is as follows:

[0030] When pulling out the core shaft, the vertical frame mechanism 1 is moved to a position near the sub-winding core shaft along the horizontal guide rail by a gear meshing with the rack 14 driven by a variable-frequency braking motor 18. The height and distance positions of the core shaft are detected by photoelectric sensors. After accurately positioning the core shaft, the mounting bracket 48 driven by a servo motor 47 moves the clamping air charging and discharging device 3 to the step of the core shaft and clamps it. The rodless cylinder 50 aligns the air charging and discharging positioning ring 49 with the air charging and discharging port at the end of the core shaft and deflates the core shaft. After the deflation is completed, the air charging and discharging positioning ring 49 leaves the core shaft. The servo motor 47 drives the clamping air charging and discharging device 3 to start slowly pulling out the core shaft. The pulled-out core shaft is supported by the guide wheel 32 on the horizontal guiding mechanism 2. The servo motor 47 drives the clamping air charging and discharging device 3 to continue pulling out the core shaft until the core shaft 34 is completely pulled out and placed on the matching guide wheel 32.

[0031] When threading the paper tube, the clamping arm opening and closing cylinder 46 of the clamping air charging and discharging device 3 acts to loosen the core shaft. The clamping air charging and discharging device 3 leaves the end of the core shaft and returns to the other end of the core shaft. The elevator 15 drives the horizontal guiding mechanism 2 to descend. The servo motor 47 drives the clamping air charging and discharging device 3 to clamp the core shaft 34 supported by the guide wheel 32 on the horizontal guiding mechanism 2 and transfer it to the paper tube threading positioning device 5. After automatic paper tube threading, the core shaft with the paper tube is clamped and inflated. After the inflation is completed, the clamping air charging and discharging device 3 leaves the core shaft.

[0032] When loading the core shaft, the servo motor 47 drives the clamping air charging and discharging device 3 to start slowly pulling out the core shaft with the paper tube from the paper tube threading positioning device 5. The pulled-out core shaft is supported by the guide wheel 32 on the horizontal guiding mechanism 2. The servo motor 47 drives the clamping air charging and discharging device 3 to continue pulling out the core shaft until the core shaft is completely pulled out from the paper tube threading positioning device 5 and placed on the matching guide wheel 32. The clamping arm opening and closing cylinder 46 of the clamping air charging and discharging device 3 acts to loosen the core shaft. The clamping air charging and discharging device 3 leaves the end of the core shaft and returns to the other end of the core shaft. The elevator 15 drives the horizontal guiding mechanism 2 to rise. The gear meshing with the rack 14 driven by the variable-frequency braking motor 18 moves the vertical frame mechanism along the horizontal guide rail to the core shaft waiting position of the slitter, waits for a signal, and the servo motor 47 drives the clamping air charging and discharging device 3 and the guiding cylinder 33 together to clamp the paper tube core shaft supported by the guide wheel 32 on the horizontal guiding mechanism 2 and transfer it to the core shaft waiting place of the slitter. After the sub-winding is slit and wound, the above actions are repeated. It can save more personnel, reduce the labor intensity of workers, and truly realize the automatic functions such as core shaft loading, pulling out, and paper tube threading of the slitter.

Claims

1. An automatic shaft feeding, shaft pulling and paper tube threading mechanism, characterized in that: It includes a vertical frame mechanism (1) capable of moving back and forth on an orbital mechanism, a horizontal guiding mechanism (2) installed on the elevator of the vertical frame mechanism, a clamping inflation and deflation device (3) installed on the horizontal guiding mechanism (2) and capable of moving left and right along the horizontal guiding mechanism, a gas circuit control mechanism (4) installed on the horizontal guiding mechanism, and a paper tube positioning device (5) located on one side of the vertical frame mechanism (1); the orbital mechanism includes left and right horizontal guide rails (13) installed on horizontally arranged left and right track plates (12) through fixed connectors, a rack (14) arranged in parallel between the left and right guide rails, and a horizontal drag chain guiding groove (11) arranged outside one of the track plates (12) in a manner parallel to the track plate; one end of the horizontal drag chain for arranging various wire harnesses located in the horizontal drag chain guiding groove (11) is combined with the vertical frame mechanism (1), and the other end is combined with the rear end of the horizontal drag chain guiding groove; the vertical frame mechanism (1) includes a vertical frame mechanism support platform (17) installed on a guide rail slider cooperating with the left and right guide rails, a guiding vertical frame installed on the vertical frame mechanism support platform (17), an elevator (15) installed on the vertical frame mechanism support platform (17) for driving the horizontal guiding mechanism (2) to move up and down along the guiding vertical frame, a gear installed on the vertical frame mechanism support platform (17) and meshing with the rack (14) driven by a variable frequency braking motor (18), and two limit columns (16) on the left and right located on the vertical frame mechanism support platform (17); the height of the limit column is the lower stop point for the horizontal guiding mechanism (2) to move downward; left and right lifting guide rails (20) are respectively arranged on both sides of the guiding vertical frame, and the left and right lifting guide rails are respectively combined with left and right supports (19) for placing the horizontal guiding mechanism (2) through sliders; a vertical drag chain guiding groove (21) is installed on one side of the guiding vertical frame, and the upper end of the vertical drag chain for arranging various wire harnesses located in the vertical drag chain guiding groove is combined with the horizontal guiding mechanism (2), and the lower end is combined with the lower end of the vertical drag chain guiding groove (21); the clamping inflation and deflation device (3) includes a mounting frame (48) installed with a servo motor (47) through sliders on the upper and lower guide rails (37, 35) of the horizontal guiding mechanism (2), and the mounting frame (48) drives a gear meshing with the rack (36) to move left and right along the upper and lower guide rails (37, 35) of the horizontal guiding mechanism (2) under the drive of the servo motor (47); the mounting frame (48) is composed of left and right frame bodies consolidated through a connecting frame, and a clamping seat (44) is installed on the right frame body of the mounting frame (48) through vertically arranged cooperating guide rail sliders and a lifting cylinder (45); left and right linkage blocks (42) connected through a linkage shaft (52) are installed on the clamping seat (44), and the linkage shaft (52) is driven by a clamping arm opening and closing cylinder (46) to drive left and right clamping arms (40) driven by a left and right meshing gear set (41) arranged at the outer ends of the left and right linkage blocks (42) to achieve opening and closing movement;A rodless cylinder (50) is installed below the clamping seat (44), and a pneumatic manifold block (51) is installed on the rodless cylinder (50). Inflation / deflation positioning pressure rings (49) are installed on the left and right sides of the pneumatic manifold block (51). The rodless cylinder (50) is used to drive the pneumatic manifold block (51) and the left and right inflation / deflation positioning pressure rings (49) to move left and right and be positioned and matched with the end of the mandrel to achieve inflation and deflation of the mandrel. The pneumatic manifold block (51) is used to separate the air path for inflation and deflation of the left and right inflation / deflation positioning pressure rings (49). The left and right inflation / deflation positioning pressure rings (49) are used to be positioned and matched with the end of the mandrel. The paper tube threading positioning device (5) includes a bracket (65), a V-shaped groove (62) for placing the paper tube, which is installed on the bracket (65) by left and right cylinders (64) located at both ends. A guide rail (63) is installed on a cross beam connected to the bracket (65) by bearings. A partition plate (61) is connected to the slider of the guide rail (63) by a connecting member and a handle (60). Under the action of the left and right cylinders (64) and the bearings, the partition plate (61) separates paper tubes of different lengths by adjusting the distance between the sliders, and the height of the wire is adjusted by the handle (60) to fix the slider so as to fix the partition plate (61), facilitating the insertion of the mandrel.

2. The automatic shaft feeding, shaft pulling and paper tube threading mechanism according to claim 1, characterized in that: The horizontal guiding mechanism (2) includes left and right supports (19) respectively cooperating with a lifting guide rail (20) through sliders, a guiding frame (30) installed on the left and right supports (19), upper and lower guide rails (37, 35) installed on the front side of the guiding frame (30), a rack (36) installed parallel to the lower part of the upper guide rail (37), left and right drag chain guiding grooves (39, 38) arranged side by side along the length direction of the guiding frame (30) at the top of the guiding frame, left and right drag chains arranged in the left and right drag chain guiding grooves for arranging various wire harnesses, and a plurality of guiding wheels (32) arranged below the front part of the lower guide rail (35) along the length direction of the guiding frame. A guide rail guard plate (31) is arranged below the guiding wheels (32), and a guiding cylinder (33) for pushing a paper tube core shaft into the slitter to position the paper tube core shaft is arranged at the outer end of the guiding wheel at the rightmost end.

3. The automatic shaft loading, shaft pulling and paper tube threading mechanism according to claim 1, characterized in that: The pneumatic control mechanism (4) for controlling the actions of all cylinders is installed on the guiding frame (30) of the horizontal guiding mechanism (2).

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