Paper tube cutting machine tool device

Abstract

The invention discloses a tool device for a paper tube cutting machine, comprising a cylinder, a piston rod of the cylinder connected to a slider; an insulating seat is fixed on the slider; the insulating seat has an insulating material, a through hole is processed in the insulating material, a conductive connecting shaft is installed in the hole, and a cutter is connected to one end of the connecting shaft; a signal line is installed on the insulating seat, and the signal line is electrically conductive with the connecting shaft; the signal line is connected to an external control system, and the cutter is connected to the control system through the connecting shaft and the signal line in sequence. When the cutter contacts the mandrel, a current path is formed, and current is generated in the entire path. After the control system detects the current signal, it immediately controls the cutter to retreat, which can avoid the cutter from colliding with the mandrel, prevent damage to the cutter blade and the surface of the mandrel, increase the service life of the cutter and the mandrel, reduce production and processing costs, and reduce the number of replacements, thereby greatly improving production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of paper tube processing equipment, in particular to a tool device of a paper tube cutting machine for cutting a paper tube. Background Art

[0002] As a common product in daily life, paper tubes have a wide range of applications. For example, products such as tapes, rolls of paper, and plastic films all use paper tubes as the inner core. When making paper tubes, firstly, paper of a certain thickness and hardness is combined with glue, and the hard paper is wound into paper tubes on a special tube winding device. Since the winding process is continuous, during the manufacturing process, the paper tube needs to be cut into long paper tubes with a length of one to several meters. At this time, the length of the paper tube is very long and cannot be directly applied to products such as tapes and rolls of paper. Therefore, a special paper tube cutting device is also required to cut the long paper tube into small sections of paper tubes of a specified length. When the paper tube cutting machine of the prior art is working, the paper tube rotates at a high speed driven by the chuck, and the cutter approaches the paper tube and is tangent to the high-speed rotating paper tube, and the friction between the two is used to cut the paper tube, but the cutting machine itself cannot confirm when the cutter cuts the paper tube, so in the prior art, a larger cutter advance amount is usually set to ensure that the cutter has enough cutting amount to completely cut the paper tube. Since the inside of the paper tube is a metal mandrel, and the spacing between the inner wall of the paper tube and the mandrel is very small, after the cutter cuts the paper tube, it is easy to collide with the mandrel in the process of continuing to move forward, resulting in the rolling of the cutter blade, causing the incision to be uneven in the subsequent cutting process, affecting the quality of the paper tube, and even causing it to be scrapped, and the cutter needs to be replaced frequently, reducing the processing efficiency. In addition, since the cutter and the mandrel often collide, the cutter scratches the surface of the mandrel. After a period of time, the surface of the mandrel is scratched by the cutter, causing the surface of the mandrel to be uneven, which easily causes the paper tube to be unstable when rotating at high speed, and also causes the incision to be uneven, affecting the cutting quality, and the mandrel needs to be replaced, increasing the processing cost. At the same time, the paper tube cutting machine of the prior art has only one cutter for cutting processing, and the processing efficiency is low. In addition, since the cutter does not rotate during the cutting process, the cutter always cuts the paper tube at the same position, which is easy to cause local blade damage, and the cutter needs to be replaced frequently, affecting the processing efficiency. Summary of the invention

[0003] In order to solve the problems in existing paper tube cutting machines, such as the inability to automatically detect whether the cutter is in contact with the metal core shaft, which causes damage caused by collision between the cutter and the core shaft, and the inability of the cutter to rotate, which leads to frequent replacement of the cutter, affecting processing efficiency and increasing maintenance costs, the applicant provides a new tool device for paper tube cutting machine, which can avoid damage caused by collision between the cutter and the core shaft, and periodically rotate the cutter, thereby reducing maintenance costs and improving the processing efficiency of the cutting machine.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A tool device for a paper tube cutting machine comprises a cylinder, a piston rod of the cylinder is connected to a slider; an insulating seat is fixed on the slider; the insulating seat has an insulating material, a through hole is processed in the insulating material, a conductive connecting shaft is installed in the hole, and a cutter is connected to one end of the connecting shaft; a signal line is installed on the insulating seat, and the signal line is electrically conductive with the connecting shaft; the signal line is connected to an external control system, and the cutter is connected to the control system via the connecting shaft and the signal line in turn.

[0006] As a further improvement of the above technical solution:

[0007] A metal conductive bolt is installed on the insulating seat. The conductive bolt contacts the connecting shaft after passing through the insulating material. The conductive bolt is externally connected to a signal line.

[0008] A cutter fixing disk is installed between the connecting shaft and the cutter, and the cutter is installed on the cutter fixing disk.

[0009] The control system can provide voltage to the cutter, detect current signals in the circuit, and control the movement of the cutter device.

[0010] A cutter rotating mechanism is installed at the other end of the connecting shaft, and the connecting shaft is electrically isolated from the cutter rotating mechanism.

[0011] The cutter rotating mechanism is composed of a stepping motor and a reduction gear, and the reduction gear is made of insulating material.

[0012] The slide block is installed on a guide rail, and the guide rail is fixed on a base.

[0013] The tool device comprises two sets, an upper set and a lower set, and the two sets of tool devices are fixed together.

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

[0015] The tool device of the present invention installs a cutter on an insulating seat. When the cutter contacts the core shaft, a current path is formed and current is generated in the entire path. After the control system detects the current signal, it immediately controls the cutter to retract, thereby avoiding collision between the cutter and the core shaft, preventing damage to the cutter blade and the surface of the core shaft, increasing the service life of the cutter and the core shaft, reducing production and processing costs, and reducing the number of replacements, thereby greatly improving production efficiency.

[0016] The tool device of the present invention is equipped with a cutter rotating mechanism. During the processing, when the blade at one position of the cutter operates for a certain period of time or cuts a certain number of times, the cutter rotating mechanism drives the cutter to rotate a certain angle so that the new blade part is aligned with the paper tube for cutting, thereby avoiding cutting with the blade at one position all the time and increasing the service life of the cutter.

[0017] The tool device of the present invention comprises two sets, an upper set and a lower set. The two sets of tool devices are fixed together and can cut two paper tubes at the same time, thereby greatly improving the processing efficiency of the paper tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the front view of the paper tube cutting machine.

[0019] Figure 2 for Figure 1 A top view of the invention is shown, in which the clamping and rotating device is not shown.

[0020] Figure 3 It is a schematic diagram of the cooperation between the tool device and the mandrel of the present invention.

[0021] Figure 4 for Figure 3 Top view of the tool assembly.

[0022] Figure 5 for Figure 4 The cross-sectional view along the AA direction only shows the structure of one cutter.

[0023] Figure 6 for Figure 4 The cross-sectional view along the BB direction only shows the structure of one cutter.

[0024] In the figure: 1. frame; 2. clamping and rotating device; 3. tool device; 4. horizontal moving device; 5. spindle fixing device; 6. driving device; 7. control system; 8. spindle; 9. center roller; 10. spindle group; 11. cutter; 12. cylinder; 13. cutter rotating mechanism; 14. insulating seat; 15. connecting shaft; 16. conductive bolt; 17. signal line; 18. slider; 19. fixing bolt; 20. base; 21. cutter fixing plate; 22. motor; 23. screw rod; 24. connecting seat; 25. guide rail. DETAILED DESCRIPTION

[0025] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0026] like Figure 1 and Figure 2 As shown, the paper tube cutting machine using the tool device of the present invention includes a frame 1 and a control system 7. A mandrel fixing device 5 and a driving device 6 are installed at one end of the frame 1, and a clamping and rotating device 2 is installed at the other end. The driving device 6 is connected to the mandrel fixing device 5 and is used to drive the mandrel fixing device 5 to rotate and move horizontally. A central roller 9 is installed at the center of the mandrel fixing device 5, and multiple mandrels 8 are installed on the edge. One end of the mandrel 8 is fixedly installed on the mandrel fixing device 5, and the other end is directly opposite to the clamping and rotating device 2. The clamping and rotating device 2 is used to clamp the paper tube and drive the paper tube to rotate at high speed to complete the cutting.

[0027] A horizontal moving device 4 is also installed on the frame 1 of the paper tube cutting machine, and a tool device 3 is installed above the horizontal moving device 4, which can drive the tool device 3 to move horizontally along the axis direction of the core shaft 8. By moving a certain distance each time, the tool device 3 cuts the paper tube mounted on the core shaft 8 to form a small paper tube of a certain length. In this embodiment, the number of core shafts 8 is preferably 8, and every two core shafts 8 form a core shaft group 10, with a total of 4 groups. The tool device 3 is equipped with upper and lower groups of tools for cutting 2 paper tubes at the same time.

[0028] The horizontal moving device 4 includes a motor 22, the output shaft of the motor 22 is connected to a screw rod 23, and connecting seats 24 are installed at both ends of the screw rod 23. The tool device 3 is installed on the screw rod nut. When the motor 22 is working, the screw rod 23 drives the tool device 3 to move horizontally. The length of the paper tube product is set in the cutting machine control system 7. After the tool device 3 completes one cutting, the horizontal moving device 4 drives the tool device 3 to move horizontally by the same distance as the length of the paper tube product, and performs the next cutting, and cuts the entire long paper tube in sequence. When the entire long paper tube is completely cut, the horizontal moving device 4 drives the tool device 3 back to the starting position to prepare for cutting the next group of paper tubes.

[0029] like Figure 3 As shown, the tool device 3 of the present invention includes two sets of tools, the upper and lower sets of tools, which are fixed together. Figure 4 , 5 As shown in Figures 6 and 7, the tool device 3 includes a cylinder 12, the piston rod of the cylinder 12 is connected to a slider 18, the slider 18 is mounted on a guide rail 25, and the guide rail 25 is fixed on a base 20. An insulating seat 14 is mounted above the slider 18 through a fixing bolt 19, and the insulating seat 14 is made of insulating material. The insulating seat 14 is processed with a central through hole perpendicular to the axis of the cylinder 12 in the horizontal direction, and a connecting shaft 15 is installed in the hole. The connecting shaft 15 can conduct electricity, and a cutter rotating mechanism 13 is installed at one end of the insulating seat, and a cutter fixing plate 21 is connected to the other end, and a cutter 11 is installed on the cutter fixing plate 21. In this embodiment, the cutter rotating mechanism 13 is composed of a stepping motor and a reduction gear, and the reduction gear is made of insulating material to ensure that the connecting shaft 15 is electrically isolated from the stepping motor. The cutter rotating mechanism 13 is used to drive the connecting shaft 15 and the cutter 11 to rotate a certain angle. A metal conductive bolt 16 is installed above the insulating seat 14, and the conductive bolt 16 passes through the upper half of the insulating seat 14 and contacts the connecting shaft 15. The conductive bolt 16 is externally connected with a signal line 17, which is connected to the control system 7 and is controlled and supplied with a safety voltage by the control system 7. Through the above structure, the signal line 17 is connected to the cutter 11 through the conductive bolt 16, the connecting shaft 15, and the cutter fixing plate 21 in sequence.

[0030] When the cutter device 3 starts working, the cutter 11 is not in contact with the paper tube. At this time, there is voltage on the cutter 11, but no current flows. The cylinder 12 pushes the slider 18 and the cutter 11 to move to the position of the mandrel 8, tangent to the high-speed rotating paper tube, and cuts the paper tube. After the paper tube is cut, the cutter 11 continues to move forward. When the cutter 11 contacts the mandrel 8, since the mandrel 8 is made of metal material and forms a path through the entire cutting mechanism. Therefore, the moment the cutter 11 contacts the mandrel 8, a current path is formed, and current is generated in the entire path. At this time, current will also flow through the signal line 17. After the control system 7 detects the current signal of the signal line 17, it immediately controls the cylinder 12 to retreat and return the cutter 11 to the starting position. Through the coordination of the above different insulating and conductive structures, the control system 7 can monitor the current at the moment when the cutter 11 contacts the core shaft 8, and control the cutter 11 to retract. The cutter 11 will not collide with the core shaft 8, thereby avoiding damage to the blade of the cutter 11 and the surface of the core shaft 8, thereby increasing the service life of the cutter 11 and the core shaft 8, reducing production and processing costs, and reducing the number of replacements, thereby greatly improving production efficiency.

[0031] In the process of cutting the paper tube, since the cutter 11 does not need to rotate at a high speed, if the cutter 11 is always cut at one position, the blade of the cutter 11 will inevitably curl, affecting the quality of the paper tube cut. The present invention provides a cutter rotating mechanism 13. When the blade of the cutter 11 at one position works for a certain period of time or cuts a certain number of times, the cutter rotating mechanism 13 drives the cutter 11 to rotate a certain angle, so that the new blade part is aligned with the paper tube for cutting, thereby avoiding cutting with the blade at one position all the time and improving the service life of the cutter 11.

[0032] See also Figure 3When the paper tube cutting machine using the tool device of the present invention is working, the four groups of mandrel groups 10 have different functions respectively. The two mandrels 8 arranged vertically on the right side form a mandrel group 10, and each mandrel 8 is equipped with a paper tube. The tool device 3 has two upper and lower cutters, which can cut two paper tubes at the same time, which doubles the processing efficiency compared with the single paper tube cutting in the prior art. The mandrel group 10 at the top has two paper tubes to be cut. The mandrel group 10 on the left faces the operator. When the cutting machine cuts the paper tube on the right, the operator removes the small paper tube that has been cut before and performs a preliminary inspection, and at the same time, the new long paper tube is installed on the mandrel 8. The mandrel group 10 located at the bottom has two mandrels 8 with small paper tubes that have been cut, but because these two mandrels are located at the bottom, it is inconvenient to operate and is used as a transition zone. When the two paper tubes on the right are cut, the driving device 6 drives the mandrel fixing device 5 to rotate precisely 90 degrees, and the top mandrel group 10 turns to the right to perform the next group of cutting, while the other three mandrel groups 10 also turn to the next process. Using the tool device 3 with two sets of tools in the present invention can increase the paper tube processing efficiency by more than one time.

[0033] The above description is an explanation of the present invention, not a limitation of the present invention. The present invention may be modified in any form without violating the spirit of the present invention.

Claims

1. A tool device for a paper tube cutting machine, characterized in that: The invention comprises a cylinder (12), a piston rod of the cylinder (12) connected to a slider (18); an insulating seat (14) is fixed to the slider (18); the insulating seat (14) comprises an insulating material, a through hole is processed in the insulating material, a conductive connecting shaft (15) is installed in the hole, and a cutter (11) is connected to one end of the connecting shaft (15); a metal conductive bolt (16) is installed on the insulating seat (14), the conductive bolt (16) contacts the connecting shaft (15) after passing through the insulating material, the conductive bolt (16) is externally connected to a signal line (17), and the signal line (17) is electrically conductive to the connecting shaft (15); the signal line (17) is connected to an external control system, and the cutter (11) is connected in sequence to the conductive bolt (16). The connecting shaft (15) is connected to a control system via a connecting shaft (15), a conductive bolt (16), and a signal line (17); a cutter rotating mechanism (13) is installed at the other end of the connecting shaft (15); the connecting shaft (15) and the cutter rotating mechanism (13) are electrically isolated; the cutter rotating mechanism (13) is used to drive the connecting shaft (15) and the cutter (11) to rotate at a certain angle; when a blade of the cutter (11) at one position operates for a certain period of time or cuts a certain number of times, the cutter rotating mechanism (13) drives the cutter (11) to rotate at a certain angle so that a new blade part is aligned with the paper tube for cutting; the cutter rotating mechanism (13) is composed of a stepping motor and a reduction gear, and the reduction gear is made of insulating material.

2. The tool device of the paper tube cutting machine according to claim 1, characterized in that: A cutter fixing disk (21) is installed between the connecting shaft (15) and the cutter (11), and the cutter (11) is installed on the cutter fixing disk (21).

3. The tool device of the paper tube cutting machine according to claim 1 is characterized in that: The control system can provide voltage to the cutter (11), detect current signals in the circuit, and control the movement of the cutter device.

4. The tool device of the paper tube cutting machine according to claim 1, characterized in that: The slide block (18) is mounted on a guide rail (25), and the guide rail (25) is fixed on a base (20).

5. The tool device of the paper tube cutting machine according to any one of claims 1 to 4, characterized in that: The tool device comprises two sets, an upper set and a lower set, and the two sets of tool devices are fixed together.

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