Sizing chain machine metal detector

Abstract

The present invention belongs to the technical field of detecting metals with a detecting conductor, and discloses a metal detector for a sizing chain machine, which includes a workbench arranged at the tail end of the sizing chain machine. A roller shaft is rotatably connected to the workbench. The metal detector further includes a taking-out rod arranged outside the roller shaft, and a hook is fixed to one end of the taking-out rod that is not connected to the roller shaft. A detecting roller, a driving member for driving the roller shaft to rotate, and a controller for controlling the opening and closing of the driving member are also arranged on the workbench. A detecting module for transmitting an opening and closing signal of the driving member to the controller is arranged on the detecting roller. The present invention solves the problem that in the prior art, the iron wire at the bottom of the pulp package cannot be accurately detected and removed, so it will enter the paper machine, increasing the probability of the paper machine malfunctioning, and further increasing the maintenance cost and maintenance difficulty.

Description

Technical Field

[0001] The present invention belongs to the technical field of detecting metals with a detecting conductor, and particularly relates to a metal detector for a sizing chain machine. Background Art

[0002] The production of toilet paper mainly includes multiple processes such as pulping, papermaking, coating, and forming. Pulping refers to steps such as separating fibers from raw materials through cooking, washing, bleaching, washing and screening, concentration, or making pulp sheets. Usually, the made pulp sheets are wrapped with iron wires into pulp bales for storage and placement. When the papermaking process is required, a chain machine is used to convey the pulp bales into the papermaking machine for processing; during the conveying process, the iron wires wrapped outside the pulp bales need to be cut off and extracted. However, during the extraction of the iron wires, the situation of iron wires remaining on the pulp bales may occur. If the remaining iron wires enter the papermaking machine with the pulp bales, the iron wires will cause wear of the disc mill grinding plates of the papermaking machine or damage and jamming of the pulp board valves. Therefore, the outside of the pulp bales is detected before transmission to remove the remaining iron wires.

[0003] In the actual production process, the detection of iron wires is carried out by manual visual inspection and removal. The iron wires on the top and side surfaces of the pulp bales can be removed, but the iron wires at the bottom are not easy to observe, and there are still iron wires remaining at the bottom of the pulp bales, increasing the probability of damage to the papermaking machine, resulting in high maintenance costs and great maintenance difficulties for the papermaking machine. Moreover, the produced toilet paper will contain iron wires, affecting the use and resulting in poor user experience. Summary of the Invention

[0004] The present invention aims to provide a metal detector for a sizing chain machine to solve the problem in the prior art that the iron wires at the bottom of the pulp bales cannot be accurately detected and removed, so they will enter the papermaking machine, increasing the probability of faults in the papermaking machine, and further increasing the maintenance costs and maintenance difficulties.

[0005] To achieve the above object, the present invention provides the following technical solution. The metal detector for a sizing chain machine includes a workbench arranged at the tail end of the sizing chain machine. A roller shaft is rotatably connected to the workbench. The metal detector further includes a taking-out rod arranged outside the roller shaft. A hook is fixed to the end of the taking-out rod that is not connected to the roller shaft. A detection roller, a driving member for driving the roller shaft to rotate, and a controller for controlling the opening and closing of the driving member are further arranged on the workbench. A detection module for transmitting an opening and closing signal of the driving member to the controller is arranged on the detection roller.

[0006] The technical principle of this technical solution:

[0007] During the process of conveying the pulp bale, the detection module detects whether there is iron wire mixed at the bottom of the pulp bale. If there is iron wire, the detection module will transmit the detected signal to the controller, and the controller controls the driving part to start. The driving part drives the roller to rotate, so that the extraction rod gradually locates above the roller, and the hook is attached to the bottom of the pulp bale. Therefore, during the movement of the chain, relative movement will occur with the pulp bale, and the iron wire will be hooked off by the hook.

[0008] Beneficial effects of this technical solution:

[0009] 1. By setting a detection module on the detection roller in this technical solution, it can complete the detection of the pulp bale at the bottom and process the iron wire subsequently;

[0010] 2. In this technical solution, the opening and closing of the driving part are controlled by the signal transmitted by the detection module. Thus, when there is iron wire, the extraction rod rotates to be attached to the bottom of the pulp bale, and relative movement occurs between the pulp bale and the extraction rod during the transmission of the chain machine, so as to hook out the iron wire and complete the detachment of the iron wire, avoiding the iron wire entering the paper machine together with the pulp bale.

[0011] This technical method was formed by the inventor through long-term research and development. In the initial stage of research and development, in order to detect the bottom of the pulp bale, after completing the detection of the top and side, the pulp bale was turned over so that the bottom of the pulp bale was at the top, and then detected, and the remaining iron wire was taken out. However, it was found in the actual use process that due to the large weight of the pulp bale, it was not easy to turn over, and the whole process was time-consuming and laborious; moreover, the pulp bale was bundled by many pulp sheets, and the pulp bale was prone to loosen during the turning process, which was not conducive to subsequent transmission.

[0012] In order to overcome the above problems, the inventor also used an existing food detector to detect the pulp bale at the bottom. In this way, due to the structural setting of the existing detector, it was not easy to detect, and the detection accuracy was low. The equipment needed to be shut down during detection, and then the iron wire was taken out, so the applicability was not strong.

[0013] Therefore, the inventor carried out continuous research and development and formed the technical solution of the sizing chain machine metal detector provided by this technical solution, which can detect iron wire during the conveying process of the pulp bale and synchronously extract the detected iron wire without stopping the machine for operation, and has a wider applicability.

[0014] Furthermore, a sliding groove is arranged along the radial direction on the outer side of the roller, the extraction rod is slidably connected in the sliding groove, a first magnetic block is arranged on the workbench below the sliding groove, and a second magnetic block that repels the first magnetic block is arranged at one end of the extraction rod located in the sliding groove.

[0015] Beneficial effects: The extraction rod slides outside the roller shaft. When the extraction rod rotates to the top, due to the mutual repulsion between the first magnet and the second magnet, the extraction rod slides upward along the sliding groove and adheres to the bottom of the pulp package. During the transmission of the pulp package, relative movement occurs between the iron wire and the extraction rod, thereby removing the iron wire from the bottom of the pulp package. When the second magnet on the extraction rod is not opposite to the first magnet, the force repelling the extraction rod disappears, and the extraction rod slides into the sliding groove under the action of gravity.

[0016] Furthermore, a limiting groove communicating with the sliding groove is provided inside the roller shaft. The width of the limiting groove is greater than the width of the sliding groove. One end of the extraction rod extends into the limiting groove, and a limiting rod is fixed to the end of the extraction rod located in the limiting groove. The limiting rod is perpendicular to the extraction rod, and the length of the limiting rod is greater than the width of the sliding groove.

[0017] Beneficial effects: By setting the limiting rod, the extraction rod can be prevented from falling off the roller shaft.

[0018] Furthermore, a spring is provided between the limiting rod and the limiting groove.

[0019] Beneficial effects: Setting the spring can facilitate the reset of the extraction rod.

[0020] Furthermore, a torsion spring is sleeved on the roller shaft. One end of the torsion spring is fixed on the workbench, and the other end is fixed on the roller shaft.

[0021] Beneficial effects: When the detection module detects that there is an iron wire at the bottom of the pulp package, the roller shaft is driven to rotate by the driving member. At this time, the torsion spring stores energy. After the iron wire is removed, the roller shaft resets under the action of the torsion spring.

[0022] Furthermore, multiple detection modules are provided, and the detection modules are uniformly arranged along the length direction of the detection roller; multiple extraction rods are provided, and the extraction rods are uniformly arranged along the axial direction of the roller shaft; the number of extraction rods is the same as that of the detection modules.

[0023] Beneficial effects: By setting multiple detection modules, the entire bottom of the pulp package can be covered, making the detection accuracy higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a longitudinal sectional view of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] The following is a more detailed description through specific embodiments:

[0026] The reference numerals in the accompanying drawings of the specification include: workbench 1, first magnet 11, roller shaft 2, sliding groove 21, limiting groove 22, extraction rod 3, limiting rod 4, second magnet 41, detection roller 5, detection module 51.

[0027] Example 1:

[0028] Sizing chain machine metal detector, basically as attached Figure 1 shown, including a workbench 1, the workbench 1 is located below the tail end of the sizing chain machine, the conveying direction of the chain machine is from left to right, a roller shaft 2 is rotatably connected to the right side of the workbench 1, and a driving member for driving the roller shaft 2 to rotate is also fixed on the workbench 1. In this embodiment, the driving member is selected as a motor, and the output shaft of the motor is coaxially fixed to the roller shaft 2. A torsion spring is sleeved on the roller shaft 2, one end of the torsion spring is fixed to the roller shaft 2, and the other end of the torsion spring is fixed to the workbench 1.

[0029] A sliding groove 21 is further provided on the outer wall of the roller shaft 2, the sliding groove 21 is perpendicular to the axis of the roller shaft 2, and a limiting groove 22 communicating with the left end of the sliding groove 21 is further included, and the width of the limiting groove 22 is greater than the width of the sliding groove 21. A taking-out rod 3 is horizontally slidably connected in the sliding groove 21, the left end of the taking-out rod 3 is located in the limiting groove 22, and a limiting rod 4 is fixed to the left end of the taking-out rod 3. The length of the limiting rod 4 is greater than the width of the sliding groove 21 and less than the width of the limiting groove 22, so that the taking-out rod 3 can be prevented from detaching from the limiting groove 22.

[0030] A second magnetic block 41 and a spring are fixed to the left end of the taking-out rod 3, and the left end of the spring is fixed to the left end of the limiting groove 22. The right end of the taking-out rod 3 is located outside the sliding groove 21, and a hook is fixed to the right end of the taking-out rod 3. A first magnetic block 11 is fixed on the workbench 1. When the taking-out rod 3 is vertically arranged, the first magnetic block 11 faces the second magnetic block 41, and at this time, the first magnetic block 11 and the second magnetic block 41 repel each other. The sliding groove 21, the limiting groove 22 and the taking-out rod 3 are all provided with a plurality along the axial direction of the roller shaft 2. The specific number is set according to actual needs. In this embodiment, 5 are provided, and the taking-out rods 3 are evenly distributed on the roller shaft 2.

[0031] A detection roller 5 is fixed on the workbench 1 on the left side of the roller shaft 2. A plurality of detection modules 51 are arranged on the upper surface of the detection roller 5 along the length direction. The number of the detection modules 51 is the same as the number of the taking-out rods 3. The detection module 51 is used to detect whether there is iron wire at the bottom of the pulp package. A controller is fixed on the workbench 1. The detection module 51 transmits the detection signal to the controller, and the opening and closing of the driving member are controlled through the controller. When the detection module 51 detects that there is iron wire at the bottom of the pulp package, the signal is transmitted to the controller, so that the controller controls the driving member to start, and then the roller shaft 2 rotates, and the taking-out rod 3 rotates to be attached to the bottom of the pulp package to complete the taking out of the iron wire.

[0032] The specific implementation process is as follows:

[0033] The pulp bag after the top and the outside are inspected and cleaned is placed on the sizing chain machine, and the sizing chain machine drives the pulp bag to move to the right. When the pulp bag moves to the top of the detection roller 5, the bottom of the pulp bag is detected by the detection module 51 on the detection roller 5. If there is iron wire at the bottom of the pulp bag, the detection module 51 will transmit a signal to the controller, and the controller controls the drive member to start, and the drive member drives the roller 2 to rotate counterclockwise, and the torsion spring stores energy at this time. During the counterclockwise rotation of the roller 2, the removal rod 3 gradually becomes vertical. When the removal rod 3 is vertical, the second magnetic block 41 is repelled by the first magnetic block 11, so that the removal rod 3 slides upward, and then the top of the removal rod 3 is attached to the bottom of the pulp bag. At this time, the sizing chain machine transports the part of the pulp bag containing the iron wire to the top of the removal rod 3, and continues to move to the right, so that the removal rod 3 and the iron wire move in the opposite direction, and the iron wire is hooked down.

[0034] After the iron wire on the pulp bag is cleaned, the detection module 51 no longer transmits a signal to the controller, and thus no longer drives the controller to rotate, and the roller 2 is reset under the action of the torsion spring. During the resetting process of the roller 2, the first magnetic block 11 and the second magnetic block 41 are gradually offset, so the removal rod 3 is reset under the action of the spring and gravity.

[0035] In this way, the taking-out rod 3 can slide out of the sliding groove 21 and contact the bottom of the pulp bag only when it is vertical, which can prevent the taking-out rod 3 from scratching the bottom of the pulp bag during rotation and reduce the probability of the pulp bag being scraped apart.

[0036] For those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention. These will not affect the effect of the implementation of this patent and the practicality of the patent.

Claims

1. Metal detector for sizing chain machine, Characterized in that: It includes a workbench arranged at the end of the sizing chain machine. A roller shaft is rotatably connected to the workbench. The rotation direction of the roller shaft is opposite to the conveying direction of the upper chain machine. It also includes a pick-up rod arranged outside the roller shaft. A hook is fixed at one end of the pick-up rod that is not connected to the roller shaft. A detection roller, a driving member for driving the rotation of the roller shaft, and a controller for controlling the opening and closing of the driving member are also arranged on the workbench. A detection module for transmitting the opening and closing signal of the driving member to the controller is arranged on the detection roller. A sliding groove is arranged along the radial direction on the outer side of the roller shaft. The pick-up rod is slidably connected in the sliding groove. A first magnet is arranged on the workbench below the sliding groove. A second magnet that repels the first magnet is arranged at one end of the pick-up rod located in the sliding groove. A limiting groove communicating with the sliding groove is arranged inside the roller shaft. The width of the limiting groove is greater than the width of the sliding groove. One end of the pick-up rod extends into the limiting groove, and a limiting rod is fixed at one end of the pick-up rod located in the limiting groove. The limiting rod is perpendicular to the pick-up rod. The length of the limiting rod is greater than the width of the sliding groove. A spring is arranged between the limiting rod and the limiting groove.

2. The metal detector for sizing chain machine according to claim 1, Characterized in that: A torsion spring is sleeved on the roller shaft. One end of the torsion spring is fixed on the workbench, and the other end is fixed on the roller shaft.

3. The metal detector for sizing chain machine according to claim 2, Characterized in that: A plurality of detection modules are provided, and the detection modules are evenly arranged along the length direction of the detection roller; a plurality of pick-up rods are provided, and the pick-up rods are evenly arranged along the axial direction of the roller shaft; the number of pick-up rods is the same as the number of detection modules.

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