Follow-up cutting device for SCR honeycomb denitration catalyst wet blank

Abstract

The invention discloses a follow-up cutting device for SCR honeycomb-shaped denitration catalyst wet blanks, and relates to the technical field of SCR honeycomb-shaped denitration catalyst production equipment.The follow-up cutting device comprises a rack, a transverse moving mechanism, a lifting push rod and a cutting mechanism, the transverse moving mechanism comprises a linear sliding table, a follow-up transverse moving frame and a horizontal guide rail, and the linear sliding table is fixedly installed on the rack; the follow-up transverse moving frame is fixedly connected with the moving end of the linear sliding table, the linear sliding table of the transverse moving mechanism drives the follow-up transverse moving frame and a wet blank to move synchronously, inclined sections are effectively prevented, and waste materials are reduced; the lifting push rod is fixedly installed on the follow-up transverse moving frame, the cutting mechanism comprises a rotating power source and a cutting wire, the cutting wire is driven by the rotating power source to adjust the cutting angle, and the cutting wire is arranged in an inclined posture initially and makes inclined contact with a wet blank when cutting operation starts, so that the initial contact area is greatly reduced; shear resistance and pulling force generated by large-area contact are avoided, and wet blank deformation is reduced from the source.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of SCR honeycomb denitration catalyst production equipment, in particular to a follow-up cutting device for SCR honeycomb denitration catalyst wet blanks. BACKGROUND

[0002] SCR honeycomb denitration catalyst is a core and key material in the field of industrial flue gas denitration, and is widely used in flue gas denitration treatment in the power, chemical, metallurgical and other industries. With the advantages of high specific surface area, high denitration efficiency, good airflow adaptability and other advantages of the honeycomb structure, it has become the current mainstream denitration catalyst product.

[0003] The mainstream production process of SCR honeycomb denitration catalyst mainly consists of slurry preparation, extrusion molding, wet blank cutting, drying and calcination, and finished product cutting. Among them, the extrusion molding process realizes the continuous extrusion of the wet blank by the extruder. The wet blank cutting, as a key process after extrusion molding, needs to accurately cut the continuously extruded wet blank according to the preset length, which is the basis for the smooth development of the subsequent process.

[0004] Since the wet blank is continuously and uniformly extruded by the extruder, the cutting device needs to move synchronously with the wet blank to complete the cutting operation, which is the core technical requirement of wet blank cutting. If there is relative displacement between the cutting device and the wet blank, the cutting surface will be inclined, and the inclined cutting surface cannot meet the size and use requirements of the finished catalyst. The inclined surface and the surrounding part need to be cut off as a whole in the subsequent finished product cutting process, directly causing waste of raw materials.

[0005] At present, the existing wet blank cutting device for SCR honeycomb denitration catalyst generally adopts the vertical cutting method from top to bottom. However, this cutting method has significant technical defects: due to the characteristics of the extrusion molding process, the upper end surface of the SCR honeycomb denitration catalyst wet blank has no pores, so the cutting line initially contacts the wet blank in a large area, and a large shear resistance and pulling force will be generated during the cutting process. The wet blank is in an undried and unshaped state, with low strength, poor structural stability and easy deformation under external force. Under the action of the above forces, the wet blank cutting part will deform obviously, and the deformed part cannot be used as a finished product. In the subsequent finished product cutting process after drying and calcination, the deformed part needs to be cut off as a whole.

[0006] Even if the existing partially automated cutting device attempts to solve the above problems, for example, the patent document with publication number CN112622007B discloses a honeycomb ceramic catalyst wet blank extrusion cutting device. The device drives the screw rod to rotate through the power box, relies on the plug-in cooperation of the control rod and the control nut, realizes the switching of the two functions of automatic replacement of the cutting line and horizontal synchronous cutting of the wet blank, replaces the traditional manual cutting mode, and to some extent solves the problems of low manual cutting efficiency and skewed cutting surface. However, the patent device still does not solve the core pain point of cutting the SCR honeycomb denitration catalyst wet blank: it uses a cutting method that the cutting line is horizontally tensioned and moves horizontally with the cutting seat. When the cutting line initially contacts the wet blank, it is still a long-distance line contact. For the SCR honeycomb denitration catalyst wet blank with no pores on the upper end surface and soft and easy to deform, the contact area is still large, and obvious shear resistance and pulling force will be generated during the cutting process, resulting in deformation of the wet blank cutting part. These deformed parts still need to be cut off as a whole in the finished product cutting process, and the problem of high waste rate and low raw material utilization rate still exists. SUMMARY

[0007] Therefore, it is necessary to provide a follow-up cutting device for an SCR honeycomb denitration catalyst wet blank in view of the above technical problems.

[0008] In order to achieve the above purpose, the present application provides a follow-up cutting device for an SCR honeycomb denitration catalyst wet blank, which comprises a rack, a horizontal moving mechanism, a lifting push rod and a cutting mechanism. The horizontal moving mechanism comprises a linear slide, a follow-up horizontal moving frame and a horizontal guide rail. The linear slide is fixedly installed on the rack, and the horizontal guide rail is fixedly installed on the rack. The follow-up horizontal moving frame is fixedly connected with the moving end of the linear slide and the moving end of the horizontal guide rail. The linear slide drives the follow-up horizontal moving frame to move horizontally along the moving direction of the wet blank, and keeps the moving speed of the follow-up horizontal moving frame the same as the moving speed of the wet blank. The horizontal guide rail assists the follow-up horizontal moving frame to move stably, thereby improving the stability of the horizontal moving process. The lifting push rod is fixedly installed on the follow-up horizontal moving frame, and its output end is vertically downward. The cutting mechanism is driven to lift by the lifting push rod. The cutting mechanism comprises a rotary power source and a cutting wire. The cutting wire is driven to adjust the cutting angle by the rotary power source, and the cutting wire is initially arranged in an inclined posture. When the cutting operation starts, the cutting wire is in inclined contact with the wet blank, which greatly reduces the initial contact area and avoids the shear resistance and pulling force generated by large-area contact, thereby reducing the deformation of the wet blank from the source.

[0009] As a further detailed structure of the cutting mechanism of the application, the cutting mechanism further comprises a lifting arm, an upper connecting rod arm, a side connecting rod arm, a left upper rotating shaft, a left lower rotating shaft, a right upper rotating shaft, a right lower rotating shaft, and an angle maintaining mechanism, the lifting arm is fixedly connected with an output end of a lifting push rod and is driven by the lifting push rod to linearly lift along a vertical direction; the rotary power source is fixedly installed on the lifting arm, an output end thereof is in transmission connection with the left upper rotating shaft to drive the left upper rotating shaft to rotate; the left upper rotating shaft is rotatably installed on an upper portion of the lifting arm, one end of the upper connecting rod arm is fixedly sleeved on the left upper rotating shaft, and the other end is fixedly connected with the right upper rotating shaft; the side connecting rod arm is rotatably sleeved on the right upper rotating shaft, and the angle maintaining mechanism is connected with the side connecting rod arm to maintain the side connecting rod arm in a preset vertical posture at all times; the left lower rotating shaft is rotatably installed on a lower portion of the lifting arm, and the right lower rotating shaft is rotatably installed on a lower portion of the side connecting rod arm; a left upper guide wheel is rotatably installed on the left upper rotating shaft, a right upper guide wheel is rotatably installed on the right upper rotating shaft, a left lower guide wheel is fixedly installed on the left lower rotating shaft, and a right lower guide wheel is rotatably installed on the right lower rotating shaft; the cutting wire is sequentially sleeved on the left upper guide wheel, the right upper guide wheel, the right lower guide wheel, and the left lower guide wheel to form a closed cutting wire transmission structure, wherein a section of the cutting wire between the right lower guide wheel and the left lower guide wheel is a cutting working section for contacting the wet blank to complete cutting; The left upper rotating shaft is driven by the rotary power source to rotate, thereby driving the upper connecting rod arm to rotate around the left upper rotating shaft to adjust the inclination angle of the upper connecting rod arm; since the side connecting rod arm always maintains a vertical posture under the action of the angle maintaining mechanism, the cutting working section and the upper connecting rod arm always maintain parallelism, and then the cutting angle of the cutting working section is flexibly adjusted by adjusting the angle of the upper connecting rod arm to adapt to the cutting requirements of wet blanks of different specifications and tenacity; in combination with the initial inclination of the cutting wire, the cutting can be directly started at the optimal inclination angle without additional adjustment, thereby improving the cutting efficiency.

[0010] Further, the angle maintaining mechanism comprises a horizontal guide rod, a guide block, and a vertical guide rail, the vertical guide rail is fixedly installed on the follow-up horizontal moving frame and is arranged in a vertical direction; the guide block is in sliding connection with the vertical guide rail and can slide up and down along the vertical guide rail; one end of the horizontal guide rod is in sliding connection with the guide block and can slide horizontally relative to the guide block, and the other end is fixedly connected with the side connecting rod arm; by horizontal sliding cooperation of the horizontal guide rod and the guide block and vertical sliding cooperation of the guide block and the vertical guide rail, the movement track of the side connecting rod arm is constrained to ensure that the side connecting rod arm always maintains a vertical posture when the upper connecting rod arm is adjusted in rotation, thereby ensuring the parallel relationship between the cutting working section and the upper connecting rod arm and realizing precise adjustment of the cutting angle.

[0011] Further, the lifting arm, upper connecting rod arm or side connecting rod arm is provided with a tensioner in contact with the cutting wire for real-time tensioning of the cutting wire to avoid slackening and shaking of the cutting wire during cutting, thereby ensuring cutting accuracy and cutting effect; the tensioner adopts an elastic tensioning structure including a tensioning wheel, a tensioning shaft and an elastic member, the tensioning shaft is rotatably installed on a mounting seat, the mounting seat is fixed on the lifting arm, upper connecting rod arm or side connecting rod arm, the tensioning wheel is rotatably sleeved on the tensioning shaft, one end of the elastic member is connected with the mounting seat and the other end is connected with the tensioning shaft, the elastic member provides elastic pressure to the tensioning wheel towards the cutting wire, so that the tensioning wheel always presses the cutting wire, thereby realizing automatic elastic tensioning of the cutting wire without additional power driving, and the structure is simple and reliable.

[0012] Further, the angle maintaining mechanism can be replaced by a torsional spring, two ends of the torsional spring are fixedly connected with the right upper rotating shaft and the side connecting rod arm respectively, and the torsional spring provides elastic torsional force to the side connecting rod arm in the right upper direction; through the elastic torsional force of the torsional spring, on one hand, the posture of the side connecting rod arm is constrained to ensure that the side connecting rod arm always maintains a vertical posture when the upper connecting rod arm is rotated to adjust the angle, and on the other hand, the cutting wire can be automatically tensioned without additional installation of a tensioner, thereby simplifying the structure of the equipment and reducing the cost of the equipment, while realizing real-time tensioning of the cutting wire to avoid slackening of the cutting wire.

[0013] Further, the equipment further comprises a pasting mechanism, the pasting mechanism is used for flexibly clamping and constraining the wet blank during cutting to avoid warping, eversion and deformation of the wet blank; the pasting mechanism comprises two opposite gas cylinders, both of which are fixedly connected with a follow-up transverse frame and located on both sides of the cutting working section; the output end of the gas cylinder is horizontally arranged towards the cutting working section and fixedly provided with a push frame; the push frame is fixedly provided with two parallel pasting plates at an end away from the gas cylinder, a gap is reserved between the two pasting plates, the width of the gap is matched with the diameter of the cutting wire, the cutting working section passes through the gap to avoid interference between the pasting plates and the cutting wire; during cutting, the gas cylinder drives the push frame to move the pasting plates towards the wet blank, so that the pasting plates on both sides are pasted on the surfaces on both sides of the wet blank to provide flexible support and clamping force for the wet blank, constrain the movement of the wet blank and prevent warping, eversion and deformation of the wet blank due to shearing resistance and pulling force during cutting, while not damaging the surface of the wet blank to ensure the integrity of the wet blank.

[0014] Further, a cleaning mechanism is further included for automatically cleaning the cutting wire after cutting is completed, removing the wet green paste adhered to the surface of the cutting wire, avoiding the paste from affecting the subsequent cutting effect and cutting precision, prolonging the service life of the cutting wire, reducing the frequency of manual cleaning and replacement of the cutting wire, and improving production efficiency. The cleaning mechanism includes a cleaning shaft, a cleaning motor, a cleaning brush, a driving gear, and a driven gear. The cleaning shaft is rotatably installed on the lifting arm through a bearing. The cleaning motor is fixedly installed on the lifting arm, and its output end is in transmission connection with the cleaning shaft to drive the cleaning shaft to rotate. The cleaning brush and the driving gear are both fixedly sleeved on the cleaning shaft and synchronously rotate with the cleaning shaft. The driven gear is fixedly sleeved on the left lower shaft and is in meshing connection with the driving gear. After cutting is completed, the cleaning motor is started to drive the cleaning shaft to rotate, driving the cleaning brush and the driving gear to synchronously rotate. The driving gear drives the driven gear to rotate, and in turn drives the left lower shaft and the left lower guide wheel to rotate, driving the cutting wire to move in a cycle. Each section of the cutting wire can be in contact with the cleaning brush, realizing comprehensive and efficient cleaning of the cutting wire. The cleaning brush adopts a soft and wear-resistant brush to avoid damaging the cutting wire while ensuring the cleaning effect.

[0015] Further, a first conveying device and a second conveying device are further included. The first conveying device and the second conveying device are both fixedly installed on the rack and are sequentially arranged along the extrusion movement direction of the wet green body. A cutting space is reserved between the discharging end of the first conveying device and the feeding end of the second conveying device. The cutting working section is located above the cutting space and is used for cutting the wet green body passing through the cutting space. The first conveying device and the second conveying device both adopt a belt conveyor. Before cutting is completed, the conveying speed of the two devices is consistent with the extrusion speed of the wet green body and the movement speed of the follow-up horizontal moving frame, realizing continuous conveying and synchronous follow-up cutting of the wet green body, ensuring that the wet green body, the conveying device, and the follow-up horizontal moving frame have no relative displacement during cutting, further ensuring the flatness of the cutting section, avoiding the generation of waste caused by the inclination of the cutting section, and after cutting is completed, the speed of the second conveying device is increased to facilitate the rapid conveying of the cut wet green body, and at the same time, the distance between the cut wet green body and the continuously extruded wet green body is increased to facilitate the smooth upward movement of the cutting wire.

[0016] Further, a proximity switch is further included, which is fixedly installed on the rack and located at the side of the feeding end of the first conveying device, for detecting the position of the leading end of the extruded continuous wet blank, so as to determine the cutting timing; when the proximity switch detects the wet blank leading end signal, a detection signal is sent to the control system, the control system controls the horizontal movement mechanism to start, so that the follow-up horizontal movement frame moves synchronously with the wet blank, while the lifting push rod, the rotary power source and the coating mechanism are controlled to start synchronously, and the cutting operation is started; after cutting to the preset length, the control system controls the mechanisms to reset, completes a cutting cycle, realizes the automatic control of the cutting operation, does not need manual intervention, improves the production efficiency and reduces the labor cost, and at the same time ensures the accuracy of the cutting length.

[0017] Further, the rotary power source adopts a stepper motor or a servo motor with a worm gear, has the advantages of accurate rotation speed, controllable torque, rapid response and lock, can accurately control the rotation angle of the left upper rotating shaft, and then accurately adjust the cutting angle of the cutting working section, so as to adapt to the cutting requirements of wet blanks of different specifications; the lifting push rod can adopt an electric push rod or a servo pneumatic push rod, has the advantages of simple structure, stable lifting and accurate control, can accurately control the lifting height of the lifting arm, and then adjust the cutting depth of the cutting working section, so as to adapt to the cutting of wet blanks of different thicknesses and heights.

[0018] Further, the left upper guide wheel, the right upper guide wheel, the left lower guide wheel and the right lower guide wheel all adopt ceramic guide wheels, which have the advantages of wear resistance, smoothness and non-stick material, can reduce the friction loss between the cutting wire and the guide wheel, prolong the service life of the cutting wire and the guide wheel, and at the same time avoid the wet blank paste sticking to the guide wheel, so as to ensure the rotation flexibility of the guide wheel and the smoothness of the movement of the cutting wire.

[0019] Compared with the prior art, the technical scheme has at least one of the following beneficial effects: 1. Wet blank synchronous follow-up cutting is realized, the cutting surface is ensured to be flat, and waste is reduced: the linear slide table of the horizontal movement mechanism drives the follow-up horizontal movement frame to move along the horizontal guide rail, and the movement rate of the follow-up horizontal movement frame is consistent with the extrusion movement rate of the wet blank, so that the synchronous follow-up cutting of the cutting mechanism and the wet blank is realized, the relative displacement between the cutting device and the wet blank is avoided, the cutting surface is effectively prevented from being inclined, and the waste caused by cutting the inclined cutting surface in subsequent product cutting is reduced. 2. Flexible cutting angle adjustment and initial inclined posture, reducing the initial contact area and reducing the risk of wet blank deformation: The cutting wire of the present application cuts the wet blank in an inclined posture initially, without additional adjustment, it can realize inclined contact, the initial contact between the cutting wire and the wet blank is point contact or very small line contact, which greatly reduces the initial contact area; At the same time, by rotating the power source to drive the left upper rotating shaft to rotate, the upper connecting rod arm is rotated to adjust the angle, the cutting angle is flexibly adjusted, the optimal cutting angle can be adapted according to the specification and toughness of the wet blank, further reducing the shear resistance and pulling force in the cutting process, reducing the wet blank deformation from the source, solving the core pain points of the existing device, such as large cutting contact area and easy deformation of the wet blank, and further reducing the waste rate; 3. With wet blank covering constraint function, further preventing wet blank deformation: The two opposite air cylinders of the covering mechanism drive the covering plate to cover on both sides of the wet blank, providing flexible support and clamping force for the wet blank, effectively restraining the movement of the wet blank during cutting, preventing the wet blank from warping, eversion and deformation due to shear resistance and pulling force, while the gap between the covering plates is reserved for the cutting wire to pass through, without interfering with the cutting operation, and the covering plate is flexible contact, without damaging the surface of the wet blank, ensuring the integrity of the wet blank, cooperating with the adjustable angle cutting, realizing the anti-deformation effect, and greatly improving the cutting quality; 4. Realize automatic cleaning of cutting wire, improve cutting precision and prolong service life of cutting wire: The cleaning motor of the cleaning mechanism drives the cleaning brush to rotate, and at the same time drives the left lower rotating shaft to rotate through gear engagement, drives the cutting wire to move in a cycle, so that each section of the cutting wire can fully contact with the cleaning brush, automatically removes the wet blank paste adhered to the surface of the cutting wire, avoids paste causing cutting wire to relax, shake and increase cutting resistance, and ensures subsequent cutting precision; No need for manual cleaning or frequent replacement of cutting wire, reducing manual intervention, improving production efficiency, prolonging service life of cutting wire and reducing consumable cost. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The structure schematic diagram of the follow-up cutting device provided for Embodiment 1 of the present application; Figure 2 The working state of the follow-up cutting device provided for Embodiment 1 of the present application Figure 1 (The initial inclined posture cutting state of the cutting wire); Figure 3 The working state of the follow-up cutting device provided for Embodiment 1 of the present application Figure 2 (The horizontal posture cutting state of the cutting wire); Figure 4 The Figure 3 The sectional view along line A-A in FIG. 6; Figure 5 The structure schematic diagram of the cleaning mechanism; Figure 6 The side view of the follow-up cutting device provided for Embodiment 1 of the present application; Figure 7 This is a partial structural schematic diagram of the follow-up cutting device provided in Embodiment 2 of this application; In the diagram, 1. Frame; 2. Transverse mechanism; 201. Linear slide; 202. Horizontal guide rail; 203. Follower transverse frame; 3. Lifting push rod; 4. Cutting mechanism; 401. Lifting arm; 402. Upper linkage arm; 403. Side linkage arm; 404. Rotary power source; 405. Upper left rotating shaft; 406. Lower left rotating shaft; 407. Upper right rotating shaft; 408. Lower right rotating shaft; 409. Cutting wire; 410. Cutting working section; 411. Angle holding mechanism; 4111. Horizontal guide rod; 4 112. Guide block; 4113. Vertical guide rail; 412. Upper left guide wheel; 413. Upper right guide wheel; 414. Lower left guide wheel; 415. Lower right guide wheel; 416. Tensioner; 5. Applying mechanism; 501. Cylinder; 502. Push frame; 503. Applying plate; 6. Cleaning mechanism; 601. Cleaning shaft; 602. Cleaning motor; 603. Cleaning brush; 604. Driven gear; 605. Driven gear; 7. First conveying device; 8. Second conveying device; 9. Proximity switch. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Example 1: like Figures 1-6 As shown, this embodiment provides a follow-up cutting device for wet SCR honeycomb denitrification catalyst blanks, including a frame 1, a transverse mechanism 2, a lifting push rod 3, a cutting mechanism 4, a coating mechanism 5, a cleaning mechanism 6, a first conveying device 7, a second conveying device 8, and a proximity switch 9.

[0023] The frame 1 is used to fix and install components such as the transverse mechanism 2, the first conveying device 7, the second conveying device 8, and the proximity switch 9 to ensure the stability of each mechanism during operation.

[0024] The transverse moving mechanism 2 comprises a linear slide 201 and a follow-up transverse moving frame 203. The linear slide 201 is a servo linear slide, has high moving precision and adjustable speed, and is fixed at the upper part of the rack 1 by bolts, and the moving end is arranged along the moving direction of the wet blank. The follow-up transverse moving frame 203 is made of aluminum alloy plate, has light weight, and can reduce the load of the linear slide 201. The bottom of the follow-up transverse moving frame 203 is fixedly connected with the moving end of the linear slide 201 by bolts, and can stably move along the moving direction of the wet blank under the driving of the linear slide 201. As a further improvement, the transverse moving mechanism 2 further comprises a horizontal guide rail 202, which is arranged parallel to the linear slide 201, and the fixed end is fixed on the rack 1 by bolts. The moving end of the follow-up transverse moving frame 203 is fixedly connected with the horizontal guide rail 202, which improves the moving stability of the follow-up transverse moving frame 203. The driving motor of the linear slide 201 is electrically connected with the control system. According to the extrusion speed of the wet blank, the control system adjusts the moving speed of the moving end of the linear slide 201, so that the moving speed of the follow-up transverse moving frame 203 is consistent with the extrusion moving speed of the wet blank, and synchronous follow-up is realized.

[0025] The lifting push rod 3 is an electric push rod, the fixed end of which is fixedly installed in the middle of the follow-up transverse moving frame 203 by bolts, and the output end is vertically arranged downward and fixedly connected with the lifting arm 401 of the cutting mechanism 4. The lifting push rod 3 is electrically connected with the control system, and can drive the lifting arm 401 to linearly lift along the vertical direction under the control of the control system, so as to adjust the height of the cutting working section 410 of the cutting mechanism 4, adapt to the cutting demand of the wet blank with different heights, and realize the lifting and cutting action of the cutting working section 410.

[0026] The cutting mechanism 4 comprises a lifting arm 401, an upper connecting rod arm 402, a side connecting rod arm 403, a rotary power source 404, a left upper rotating shaft 405, a left lower rotating shaft 406, a right upper rotating shaft 407, a right lower rotating shaft 408, a cutting wire 409, and an angle maintaining mechanism 411; the lifting arm 401 is a long strip-shaped plate, which is arranged vertically to the horizontal direction, and the upper end of the lifting arm 401 is fixedly connected with the output end of the lifting push rod 3 through bolts, so that the lifting arm 401 can be synchronously lifted with the lifting push rod 3; the rotary power source 404 is a servo motor, which is fixedly installed on the upper side of the lifting arm 401 through a motor base, and the output end of the rotary power source 404 is drivingly connected with the left upper rotating shaft 405 through a shaft coupling, so that the left upper rotating shaft 405 can be driven to rotate around its own axis; the left upper rotating shaft 405 is rotatably installed in the upper through hole of the lifting arm 401 through a bearing, and the axis of the left upper rotating shaft 405 is arranged horizontally and vertically to the moving direction of the wet blank; one end of the upper connecting rod arm 402 is fixedly sleeved on the left upper rotating shaft 405 through a key, and the other end of the upper connecting rod arm 402 is fixedly connected with the right upper rotating shaft 407 through a key, so that the upper connecting rod arm 402 can be synchronously rotated with the left upper rotating shaft 405 and the angle of the upper connecting rod arm 402 can be adjusted; the side connecting rod arm 403 is a long strip-shaped plate, which is arranged parallel to the lifting arm 401, and the upper end of the side connecting rod arm 403 is rotatably sleeved on the right upper rotating shaft 407 through a bearing.

[0027] The angle maintaining mechanism 411 comprises a horizontal guide rod 4111, a guide block 4112, and a vertical guide rail 4113; the vertical guide rail 4113 is fixedly installed on one side of the follow-up traversing frame 203 through bolts and is arranged vertically; the vertical guide rail 4113 is provided with a sliding groove matched with the guide block 4112, and the guide block 4112 is slidingly arranged on the vertical guide rail 4113 and can slide up and down along the vertical guide rail 4113; one end of the horizontal guide rod 4111 is slidingly connected with the guide block 4112 and can slide relative to the guide block 4112 along the horizontal direction, and the other end of the horizontal guide rod 4111 is fixedly connected with the side connecting rod arm 403; the vertical guide rail 4113 is provided with a long slot for the horizontal guide rod 4111 to move up and down; when the rotary power source 404 drives the left upper rotating shaft 405 to rotate and drives the upper connecting rod arm 402 to rotate, the side connecting rod arm 403 always maintains a vertical posture under the constraint of the horizontal guide rod 4111, the guide block 4112, and the vertical guide rail 4113, so as to ensure that the cutting working section 410 is always parallel to the upper connecting rod arm 402 and the cutting angle can be accurately adjusted.

[0028] The left lower rotating shaft 406 is rotatably installed in the lower through hole of the lifting arm 401 through a bearing, and the axis is parallel to the left upper rotating shaft 405; the right lower rotating shaft 408 is rotatably installed in the lower through hole of the side connecting rod arm 403 through a bearing, and the axis is parallel to the right upper rotating shaft 407; the left upper guide wheel 412 is rotatably sleeved on the left upper rotating shaft 405 through a bearing, the right upper guide wheel 413 is rotatably sleeved on the right upper rotating shaft 407 through a bearing, the left lower guide wheel 414 is fixedly sleeved on the left lower rotating shaft 406 through a key, and the right lower guide wheel 415 is rotatably sleeved on the right lower rotating shaft 408 through a bearing; the cutting wire 409 adopts a high-toughness cutting wire, and is sequentially sleeved on the left upper guide wheel 412, the right upper guide wheel 413, the right lower guide wheel 415 and the left lower guide wheel 414, to form a closed loop, wherein the section of the cutting wire 409 between the right lower guide wheel 415 and the left lower guide wheel 414 is a cutting working section 410, which is perpendicular to the moving direction of the wet blank and is used for contacting the wet blank to complete cutting; the left upper guide wheel 412, the right upper guide wheel 413, the left lower guide wheel 414 and the right lower guide wheel 415 all adopt ceramic guide wheels, which are wear-resistant, smooth and non-sticky, can reduce the friction loss of the cutting wire 409, and avoid paste sticking.

[0029] A tensioner 416 is mounted at the lower part of the lifting arm 401, which is a steel wire rope tensioner in the prior art, including a mounting seat, a tensioning wheel, a tensioning shaft, a spring and other components. The tensioning shaft is rotatably installed on the mounting seat through a bearing, and the mounting seat is fixed on the lifting arm through bolts. The tensioning wheel is rotatably sleeved on the tensioning shaft and in contact with the cutting wire. One end of the spring is connected with the mounting seat, and the other end is connected with the tensioning shaft, to provide elastic pressure to the tensioning wheel towards the cutting wire, so that the tensioning wheel always presses the cutting wire 409, realizes automatic elastic tensioning of the cutting wire 409, and avoids relaxation and shaking of the cutting wire 409.

[0030] The pasting mechanism 5 includes two opposite air cylinders 501, which are fixedly installed on the follow-up transverse moving frame 203 through air cylinder seats and are symmetrically distributed on the two sides of the cutting working section 410. The output end of the air cylinder 501 is horizontally arranged towards the cutting working section 410 and is fixedly connected with a pushing frame 502 through bolts. The pushing frame 502 is in a U shape, and two parallel pasting plates 503 are welded and fixed at the end away from the air cylinder 501. A gap is reserved between the two pasting plates 503, and the gap width is 0.5-1 mm larger than the diameter of the cutting wire 409, so that the cutting working section 410 can pass through the gap and avoid interference. A 3-5 mm thick polytetrafluoroethylene buffer layer is pasted on the surface of the pasting plate 503, which is in flexible contact with the wet blank to avoid damaging the surface of the wet blank. During cutting operation, the air cylinder 501 drives the pushing frame 502 to move the pasting plate 503 towards the wet blank, so that the pasting plates 503 on the two sides are pasted on the two sides of the wet blank to provide a flexible clamping force, constrain the movement of the wet blank and prevent deformation.

[0031] The cleaning mechanism 6 comprises a cleaning rotating shaft 601, a cleaning motor 602, a cleaning brush 603, a driving gear 604, and a driven gear 605. The cleaning rotating shaft 601 is rotatably installed on the lower part of the lifting arm 401 through a bearing, and the axis is parallel to the left lower rotating shaft 406. The cleaning motor 602 is fixedly installed on the lifting arm 401 through a motor base, and the output end is in transmission connection with the cleaning rotating shaft 601 through a shaft coupling. The cleaning brush 603 and the driving gear 604 are both fixedly sleeved on the cleaning rotating shaft 601 through a key, and rotate synchronously with the cleaning rotating shaft 601. The driven gear 605 is fixedly sleeved on the left lower rotating shaft 406 through a key, and is in meshing connection with the driving gear 604, with a transmission ratio of 1:1. After cutting is completed, the cleaning motor 602 is started to drive the cleaning rotating shaft 601 to rotate, thereby driving the cleaning brush 603 and the driving gear 604 to rotate, and driving the driven gear 605, the left lower rotating shaft 406, and the left lower guide wheel 414 to rotate, so as to drive the cutting wire 409 to move circularly, and make the cleaning brush 603 clean each section of the cutting wire 409 to remove the slurry.

[0032] The first conveying device 7 and the second conveying device 8 both adopt belt conveyors, and are fixedly installed on the rack 1 through supports and arranged in sequence along the moving direction of the wet blank. A cutting space is reserved between the discharging end of the first conveying device 7 and the feeding end of the second conveying device 8, the cutting working section 410 is located above the cutting space and faces the cutting position. Before cutting is completed, the conveying speed of the first conveying device 7 and the second conveying device 8 is consistent with the extrusion speed of the wet blank and the moving speed of the follow-up transverse moving frame 203, so as to realize continuous and synchronous conveying of the wet blank. After cutting is completed, the speed of the second conveying device 8 is increased, so as to facilitate fast conveying of the cut wet blank, and at the same time, the interval between the cut wet blank and the continuously extruded wet blank is increased, thereby facilitating smooth rising of the cutting wire.

[0033] The proximity switch 9 is fixedly installed on the rack 1 through a support and located on the side of the feeding end of the second conveying device 8 away from the first conveying device 7, and is electrically connected with the control system. When the proximity switch 9 detects the wet blank head signal, a signal is sent to the control system to trigger the cutting operation.

[0034] The working process of the embodiment is as follows: 1. Initial debugging: according to the specifications of the wet blank, such as diameter and toughness, the left upper rotating shaft 405 is driven to rotate by the rotary power source 404 to adjust the inclination angle of the upper connecting rod arm 402, so that the cutting working section 410 is adjusted to a preset angle, preferably 45°, to ensure that the initial contact area of cutting is minimum. The stroke of the cylinder 501 of the pasting mechanism 5 is adjusted to adapt the pasting pressure of the pasting plate 503 to the toughness of the wet blank. The spring elasticity of the tensioner 416 is adjusted to ensure that the cutting wire 409 is tensioned. The speed of the linear slide 201, the first conveying device 7, and the second conveying device 8 is adjusted to be consistent with the extrusion speed of the wet blank. 2. Cutting trigger: the extruder continuously extrudes the wet blank, the wet blank is transported to the second conveying device 8 by the first conveying device 7, when the proximity switch 9 detects the signal of the head of the wet blank, a signal is sent to the control system, and the control system starts the cooperation of each mechanism; 3. Synchronous follow-up and clamping: the linear slide 201 drives the follow-up cross slide 203 to move along the horizontal guide rail 202, keeping synchronization with the wet blank; at the same time, the cylinder 501 of the clamping mechanism 5 is started to drive the clamping plate 503 to clamp on both sides of the wet blank, and the wet blank is flexibly constrained; 4. Inclined cutting operation: the lifting push rod 3 is started to drive the lifting arm 401 to move downward to make the cutting working section 410 contact the wet blank, and since the cutting working section 410 is inclined at 45°, the initial contact is point contact, and the cutting resistance is small; after a cut of a preset depth is made on one side of the upper end of the wet blank, the rotary power source 404 is started to drive the left upper rotating shaft 405 to rotate, thereby driving the upper connecting rod arm 402 to rotate around the left upper rotating shaft 405 to adjust the angle, and since the side connecting rod arm 403 always keeps a vertical posture under the action of the angle maintaining mechanism 411, the cutting working section 410 is adjusted synchronously with the upper connecting rod arm 402, until the cutting wire 409 is adjusted to a horizontal state; then the lifting push rod 3 continues to drive the cutting mechanism 4 to move downward to complete the cutting of the remaining part in a horizontal posture, and the overall cutting of the wet blank is successfully completed; during the cutting process, the tensioner 416 is used to real-time tension the cutting wire 409 to avoid slack and shaking; the reason for setting the inclined cutting to horizontal cutting mode is that if the inclined posture is always used for cutting, in order to ensure the cutting integrity, the overall height and size design of the cutting mechanism 4 needs to be greatly increased, which not only increases the equipment manufacturing cost, but also affects the stability of the mechanism operation, and the mode of “inclined cutting to reduce resistance first, and then horizontal cutting” can avoid the deformation of the wet blank while reasonably controlling the height of the cutting mechanism; 5. Cutting completion and cleaning: after the cutting of the wet blank is completed, the cylinder 501 drives the clamping plate 503 to reset, the conveying speed of the second conveying device 8 is increased for a period of time, so that the distance between the cut wet blank and the continuously extruded wet blank is increased, and the lifting push rod 3 drives the cutting mechanism 4 to reset upward; the cleaning motor 602 is started to drive the cleaning brush 603 to rotate, and at the same time, the cutting wire 409 is circularly moved to complete the automatic cleaning of the cutting wire 409; the linear slide 201 drives the follow-up cross slide 203 to reset, and waits for the next cutting trigger; 6. Continuous production: the first conveying device 7 and the second conveying device 8 continuously and synchronously convey the wet blank, the proximity switch 9 cyclically detects the position of the wet blank, and each mechanism cyclically executes the above-mentioned actions to realize the continuous and automatic cutting of the wet blank.

[0035] Example 2: As shown in Figure 7 Example 1, the Figure 4The difference between the embodiment and embodiment 1 is that the angle maintaining mechanism 411 is replaced by a torsional spring, two ends of the torsional spring are fixedly connected with the right upper rotating shaft 407 and the side connecting rod arm 403 respectively, and the torsional spring provides an elastic torsional force to the side connecting rod arm 403 in the right upper direction; through the elastic torsional force of the torsional spring, on the one hand, the posture of the side connecting rod arm 403 is constrained to ensure that the side connecting rod arm 403 always maintains a vertical posture when the upper connecting rod arm 402 rotates to adjust the angle, and on the other hand, the elastic torsional force of the torsional spring can automatically tension the cutting wire 409, so that an additional tensioner is not needed, the equipment structure is simplified, and the equipment cost is reduced; the remaining structure and working process are consistent with those of embodiment 1.

[0036] The advantage of the embodiment is that the torsional spring realizes the dual functions of angle maintaining and cutting wire tensioning, an additional tensioning mechanism is not needed, the structure is more compact, the cost is lower, the elastic tensioning effect of the torsional spring is stable, the slight stretching of the cutting wire 409 in the cutting process can be adapted, the cutting wire 409 is always tensioned, and the cutting precision is ensured.

[0037] It should be noted that the control system in the application adopts a PLC programmable controller, which is a mature automatic control component in the prior art, the control logic of which can be programmed and set according to the above working process, and no creative improvement is needed; the motors, cylinders, proximity switches and other components are mature standardized components in the prior art, and appropriate models can be selected according to actual needs, and no additional research and development is needed.

Claims

1. A follow-up cutting device for wet preforms of SCR honeycomb denitrification catalyst, characterized in that, The system includes a frame (1), a transverse mechanism (2), a lifting push rod (3), and a cutting mechanism (4). The transverse mechanism (2) includes a linear slide (201) and a follower transverse frame (203). The linear slide (201) is fixedly mounted on the frame (1), and the follower transverse frame (203) is fixedly connected to the moving end of the linear slide (201). The linear slide (201) drives the follower transverse frame (203) to move transversely along the direction of movement of the wet billet, and keeps the follower transverse frame (203) moving transversely. The moving speed of 203 is the same as the moving speed of the wet blank; the lifting push rod (3) is fixedly installed on the follower transverse frame (203), and its output end is set vertically downward; the cutting mechanism (4) is driven to lift by the lifting push rod (3), and the cutting mechanism (4) includes a rotary power source (404) and a cutting wire (409). The cutting wire (409) is driven by the rotary power source (404) to adjust the cutting angle; the cutting wire (409) initially cuts the wet blank in an inclined posture.

2. The follow-up cutting device for wet SCR honeycomb denitrification catalyst blanks according to claim 1, characterized in that, The cutting mechanism (4) further includes a lifting arm (401), an upper connecting arm (402), a side connecting arm (403), a left upper rotating shaft (405), a left lower rotating shaft (406), a right upper rotating shaft (407), a right lower rotating shaft (408), and an angle holding mechanism (411). The lifting arm (401) is fixedly connected to the output end of the lifting push rod (3) and is driven by the lifting push rod (3) to move vertically in a straight line. The rotary power source (404) is fixedly installed on the lifting arm (401), and its output end is connected to the left upper rotating shaft (405) for transmission, driving... The upper left rotating shaft (405) rotates; the upper left rotating shaft (405) is rotatably mounted on the upper part of the lifting arm (401), one end of the upper connecting arm (402) is fixedly sleeved on the upper left rotating shaft (405), and the other end is fixedly connected to the upper right rotating shaft (407); the side connecting arm (403) is rotatably sleeved on the upper right rotating shaft (407), and the angle maintaining mechanism (411) is connected to the side connecting arm (403) to keep the side connecting arm (403) in a preset vertical posture at all times; the lower left rotating shaft (406) is rotatably mounted on the lifting arm (401). 1) At the lower part, the lower right rotating shaft (408) is rotatably mounted on the lower part of the side connecting rod arm (403); the upper left rotating shaft (405) is rotatably mounted with an upper left guide wheel (412), the upper right rotating shaft (407) is rotatably mounted with an upper right guide wheel (413), the lower left rotating shaft (406) is fixedly mounted with a lower left guide wheel (414), and the lower right rotating shaft (408) is rotatably mounted with a lower right guide wheel (415); the cutting wire (409) is sequentially sleeved on the upper left guide wheel (412), the upper right guide wheel (413), and the lower right guide wheel (408). On the guide wheel (415) and the lower left guide wheel (414), the section between the lower right guide wheel (415) and the lower left guide wheel (414) where the cutting wire (409) is located is the cutting working section (410). The upper left rotating shaft (405) is driven to rotate by the rotary power source (404), which drives the upper connecting arm (402) to rotate around the upper left rotating shaft (405) to adjust the angle. The side connecting arm (403) is kept in a vertical position under the action of the angle holding mechanism (411), so that the cutting working section (410) is parallel to the upper connecting arm (402), thereby realizing the adjustment of the cutting angle.

3. The follow-up cutting device for wet SCR honeycomb denitrification catalyst blanks according to claim 2, characterized in that, The angle holding mechanism (411) includes a horizontal guide rod (4111), a guide block (4112), and a vertical guide rail (4113). The vertical guide rail (4113) is fixedly installed on the follower transverse frame (203) and is arranged in the vertical direction. The guide block (4112) is slidably connected to the vertical guide rail (4113). One end of the horizontal guide rod (4111) is slidably connected to the guide block (4112), and the other end is fixedly connected to the side connecting rod arm (403).

4. The follow-up cutting device for wet SCR honeycomb denitrification catalyst blanks according to claim 3, characterized in that, Tensioners (416) are installed on the lifting arm (401), upper connecting arm (402) or side connecting arm (403). The tensioners (416) are in contact with the cutting wire (409) and are used to tension the cutting wire (409) in real time.

5. The follow-up cutting device for wet SCR honeycomb denitrification catalyst blanks according to claim 2, characterized in that, The angle holding mechanism (411) is a torsion spring (10). The two ends of the torsion spring (10) are fixedly connected to the upper right rotating shaft (407) and the side connecting arm (403) respectively. The torsion spring (10) provides an elastic torque to the upper right of the side connecting arm (403) so that the side connecting arm (403) maintains a vertical posture and automatically tensions the cutting wire (409).

6. The follow-up cutting device for wet SCR honeycomb denitrification catalyst blanks according to claim 1, characterized in that, It also includes a coating mechanism (5), which includes two opposing cylinders (501). Both cylinders (501) are fixedly connected to the follower transverse frame (203) and are located on both sides of the cutting section (410). A pusher (502) is fixedly installed at the output end of the cylinder (501). Two parallel plates (503) are fixed at the end of the pusher (502) away from the cylinder (501). The gap between the two plates (503) allows the cutting section (410) to pass through. A buffer layer is coated on the surface of the plate (503).

7. The follow-up cutting device for wet SCR honeycomb denitrification catalyst blanks according to claim 1, characterized in that, It also includes a cleaning mechanism (6), which includes a cleaning shaft (601), a cleaning motor (602), a cleaning brush (603), a drive gear (604), and a driven gear (605). The cleaning shaft (601) is rotatably mounted on the lifting arm (401), and the cleaning motor (602) is fixedly mounted on the lifting arm (401), with its output end connected to the cleaning shaft (601). The cleaning brush (603) and the drive gear (604) are both fixedly sleeved on the cleaning shaft (601). The driven gear (605) is fixedly sleeved on the lower left shaft (406) and meshes with the drive gear (604). The cleaning brush (603) contacts and engages with the cutting wire (409).

8. The follow-up cutting device for wet SCR honeycomb denitrification catalyst blanks according to claim 1, characterized in that, It also includes a first conveying device (7) and a second conveying device (8). The first conveying device (7) and the second conveying device (8) are both fixedly installed on the frame (1) and are arranged sequentially along the extrusion direction of the wet billet. There is a cutting space between the unloading end of the first conveying device (7) and the loading end of the second conveying device (8). The cutting working section (410) is located above the cutting space. The first conveying device (7) and the second conveying device (8) are both belt conveyors, and their conveying speed is consistent with the extrusion speed of the wet billet and the moving speed of the follower transverse frame (203).

9. The follow-up cutting device for wet SCR honeycomb denitrification catalyst preform according to claim 1, characterized in that, It also includes a proximity switch (9), which is fixedly installed on the frame (1) and is used to detect the first end of the extruded continuous wet blank and determine the cutting time. The proximity switch (9) is electrically connected to the control system, which is electrically connected to the linear slide (201), the lifting push rod (3), and the rotary power source (404) respectively.

10. The follow-up cutting device according to claim 1, characterized in that, The transverse mechanism (2) further includes a horizontal guide rail (202), which is fixedly installed on the frame (1), and the follower transverse frame (203) is fixedly connected to the moving end of the horizontal guide rail (202).

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