A grinding wheel replacement reset device of an SD5 tobacco cutter

Abstract

The present application relates to tobacco processing equipment technical field, disclose a kind of grinder replacement reset device of SD5 cutter, including the abutment plate of symmetrical setting in the outside of two fixed plates, abutment plate is equipped with abutment part, two fixed plates are equipped with driving piece between base respectively, support assembly is equipped with on both sides of base, support assembly has idle state and working state, when support assembly is in idle state, support assembly is not contacted with abutment plate, power component for switching the state of support assembly is equipped on base, when grinder swings to preset replacement position, power component will support assembly be switched from idle state to working state, when support assembly is in working state, support assembly is located in the position corresponding to abutment part, so that abutment part can be supported on support assembly.The present application solves the problem in the prior art that when replacing the grinding wheel, the grinder swings to the replacement position, which is time-consuming and labor-intensive, and the grinder is inconvenient to fix at the replacement position, which has safety hazards.

Description

Technical Field

[0001] This invention relates to the field of tobacco processing equipment technology, and in particular to a grinding wheel replacement and reset device for an SD5 shredder. Background Technology

[0002] In the tobacco industry, the function of a shredder is to cut tobacco leaves and stems into shreds of the required width according to the tobacco processing specifications. It generally includes a feeding system, a cutting roller system, a sharpening system, and a transmission system. The SD5 shredder, launched by the Italian company Garbuio, is a new type of shredder with a flexible processing concept and is one of the main pieces of equipment in tobacco processing. The sharpening system is responsible for maintaining the sharpness of the shredder blades, thereby ensuring the quality and efficiency of shredding. The grinding wheel, as a key component of the sharpening system, is mounted upside down on the equipment via a base. When in the operating position, the grinding wheel is tilted inwards from top to bottom, typically with an angle of 15-20° between the grinding wheel axis and the vertical direction.

[0003] Sharpening grinding wheels leads to continuous wear, and the grinding wheel generally needs to be replaced after 70-80 hours of continuous operation of a shredder. The SD5 shredder has symmetrically arranged fixing plates on both sides of the grinding wheel, with corresponding mounting slots on the base. Pneumatic springs are installed between the fixing plates on both sides of the grinding wheel and the side walls of the mounting slots on the base. When changing the grinding wheel, loosen the locking mechanism, and the worker manually pulls the grinding wheel out of the base. The grinding wheel will swing outwards and be supported and positioned by the pneumatic springs. The ideal position for replacement is with the grinding wheel axis at an angle of 35-40° to the vertical direction. Finally, use an appropriate tool (such as a wrench) to secure the adjusted position, ensuring the grinding wheel remains stable during the replacement process.

[0004] The existing technology has the following technical defects:

[0005] 1. The grinding machine is manually pulled out of the base by workers with the help of pneumatic springs. Swinging the grinding machine to change positions is time-consuming and laborious, resulting in low efficiency.

[0006] 2. The angle at which the grinding wheel swings to a new position is difficult to control, and the angle needs to be adjusted after the grinding wheel is pulled out, which is troublesome.

[0007] 3. Due to the large weight of the grinding wheel (the grinding wheel of the SD5 shredder typically weighs 70KG), using other tools to fix the adjusted position is cumbersome and poses a safety hazard. Summary of the Invention

[0008] In view of this, the purpose of the present invention is to provide a grinding wheel replacement and reset device for an SD5 shredder, so as to solve the problems in the prior art that when replacing the grinding wheel, it is time-consuming and laborious to swing the grinding wheel to the replacement position, which is inefficient and the grinding wheel is inconvenient to fix in the replacement position, which poses a safety hazard.

[0009] This invention solves the above-mentioned technical problems through the following technical means: a grinding wheel replacement and reset device for an SD5 shredder, applied to the grinding wheel of the SD5 shredder. The grinding wheel replacement and reset device includes abutment plates symmetrically arranged on the outer sides of two fixed plates. The abutment plates are provided with abutment portions. Drive components for driving the grinding wheel to swing are respectively provided between the two fixed plates and the base. Support components are provided on both sides of the base corresponding to the abutment plates. The support components have an idle state and an active state. When the support components are in the idle state, the support components are not in contact with the abutment plates. A power component for switching the state of the support components is provided on the base. When the grinding wheel swings to a preset replacement position, the power component switches the support components from the idle state to the active state. When the support components are in the active state, the support components are located at the position corresponding to the abutment portions, so that the abutment portions can abut against the support components.

[0010] Furthermore, the driving component includes a telescopic component, one end of which is hinged to the base, and the telescopic end of which is hinged to the fixed plate. The hinge axis between the telescopic component and the base and the hinge axis between the telescopic component and the fixed plate are parallel.

[0011] Furthermore, the abutment plate is an arc-shaped plate, the outer arc surface of the abutment plate is located at the lower part of the abutment plate, and the outer arc surface of the abutment plate is serrated to form the abutment portion.

[0012] Furthermore, a reinforcing plate is inclinedly provided between the inner side of the abutment plate and the fixing plate.

[0013] Furthermore, the support assembly includes a support rod located below the abutment plate. The support rod is rotatably mounted on the side wall of the base at its middle section. One end of the support rod is inclined from bottom to top toward the front end of the base and forms an abutment end. The abutment end of the support rod can abut against the outer arc surface of the abutment plate. The other end of the support rod is inclined from bottom to top toward the rear end of the base and forms a contact end. The power assembly is located at the rear end of the base and is connected to the contact ends of the two support rods respectively.

[0014] Furthermore, a first spring is provided between the support rod and the base, and the first spring causes the abutting end of the support rod to tend to move away from the outer arc surface of the abutment plate.

[0015] Furthermore, the power assembly includes a mounting cylinder and a transmission rod. The mounting cylinder is vertically fixed to the rear end face of the base. The mounting cylinder has an internal cavity and is closed at one end and open at the other end. An electromagnetic drive assembly is installed inside the mounting cylinder. The transmission rod is located at the open end of the mounting cylinder. Both ends of the transmission rod are respectively connected to the contact ends of the two support rods. One end of the electromagnetic drive assembly extends out of the open end of the mounting cylinder and is connected to the transmission rod.

[0016] Furthermore, the electromagnetic drive assembly includes an electromagnet and a moving iron core. The electromagnet is disposed at the closed end of the mounting cylinder, and the moving iron core is movably disposed in the cavity of the mounting cylinder with one end extending out of the mounting cylinder and fixedly connected to the transmission rod. The cavity wall is provided with an annular groove, and a stop member is provided on the outer wall of the moving iron core. A second spring is fitted on the surface of the moving iron core. Both the stop member and the second spring are located in the annular groove. One end of the second spring is fixedly connected to the stop member, and the other end is fixedly connected to the inner wall of the annular groove.

[0017] Furthermore, a rotating shaft is fixed on each of the two sides of the top of the grinding wheel. The grinding wheel is rotatably mounted on the base via the rotating shaft. The rotating shaft passes through the base and extends out of the base. An incomplete gear is fixedly fitted on the surface of the part of the rotating shaft outside the base. A triggering component is provided on the base. The triggering component cooperates with the incomplete gear so that when the grinding wheel rotates to a preset angle, the electromagnet can be energized or de-energized.

[0018] Furthermore, a storage battery is provided on the base, and the triggering assembly includes mounting plates symmetrically arranged on both sides of the base. The top of the mounting plate is provided with a downwardly recessed dovetail groove. A U-shaped plate is provided between the two mounting plates. The two wings of the U-shaped plate are slidably embedded in the dovetail groove. The web of the U-shaped plate is located at the rear end of the base. The ends of the two wings of the U-shaped plate are respectively provided with racks for meshing with incomplete gears. A conductive strip is embedded in the inner sidewall of the U-shaped plate, and a conductive sheet is embedded in the sidewall of each of the two dovetail grooves. The conductive sheet is electrically connected to the electromagnet and the output terminal of the storage battery through a wire.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. By replacing the original pneumatic spring with a drive mechanism, when changing the grinding wheel, the drive mechanism drives the grinding machine to swing outward, resulting in high grinding machine movement efficiency, no need for manual operation by workers, and precise positioning of the grinding machine.

[0021] 2. When the grinding wheel is moved to a new position, it is supported and positioned by the drive component. No additional tools are needed to fix the position of the grinding wheel. By setting up abutment plate and support components, the support plate can abut against the abutment part to support the grinding wheel. This can prevent the grinding wheel from sinking and shaking due to drive component failure, which could cause equipment or personnel loss. Attached Figure Description

[0022] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the grinding wheel replacement and reset device for an SD5 shredder according to the present invention.

[0024] Figure 2 This is a schematic diagram of the installation structure of the support component and the abutment plate in this invention.

[0025] Figure 3 This is a schematic diagram of the structure of the abutment plate and the support plate in this invention.

[0026] Figure 4 This is a schematic diagram of the power component in this invention.

[0027] Figure 5 This is a cross-sectional view of the power component in this invention.

[0028] Figure 6 yes Figure 5 Enlarged structural diagram at point A in the middle.

[0029] Figure 7 This is a schematic diagram of the connection structure between the power component and the support component in this invention.

[0030] Figure 8 yes Figure 7 Enlarged structural diagram at point B.

[0031] Figure 9 yes Figure 8 Enlarged structural diagram at point C.

[0032] In the above figures: 1. Base; 2. Grinding wheel; 21. Fixing plate; 22. Rotating shaft; 23. Incomplete gear; 3. Abutting plate; 31. Abutting part; 4. Reinforcing plate; 5. Telescopic component; 6. Support assembly; 61. Support rod; 611. Abutting end; 612. Contact end; 62. First spring; 63. Support plate; 7. Power assembly; 71. Mounting cylinder; 72. Transmission rod; 73. Electromagnet; 74. Moving iron core; 75. Abutting component; 76. Annular groove; 77. Second spring; 8. Trigger assembly; 81. Mounting plate; 82. Dovetail groove; 83. U-shaped plate; 84. Rack; 85. Conductive strip. Detailed Implementation

[0033] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are for illustrative purposes only and represent schematic diagrams, not actual pictures, and should not be construed as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts in the figures may be omitted, enlarged, or reduced, and do not represent the actual product size; it is understandable for those skilled in the art that some well-known mechanisms and their descriptions may be omitted in the figures.

[0034] In the figures of this invention, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figure, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the figures are only for illustrative purposes and should not be construed as limiting this invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. In the description of this application, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] Currently, the grinding wheel 2 of the SD5 shredder is symmetrically fixed with fixing plates 21 on the middle of the left and right sides. The fixing plates 21 have the functions of limiting and supporting the grinding wheel 2. The structure of the grinding wheel and fixing plates 21 of the SD5 shredder has been fully disclosed in the existing technology, so it will not be described in detail here.

[0036] In the existing technology, the grinding wheel 2 of the SD5 shredder is supported and positioned by pneumatic springs on both sides. This support method is passive. When the grinding wheel needs to be replaced, the worker needs to manually pull the grinding wheel 2 out from the inside of the base 1 with the help of the pneumatic springs. Since the grinding wheel 2 is relatively heavy (usually 70KG), this process is not only time-consuming and laborious, but also inefficient. The grinding wheel 2 is pulled out until its axis forms an angle of about 35-40° with the vertical direction. At this time, the grinding wheel 2 tilts from top to bottom outward. This angle can help to obtain a better working view and a more comfortable operating posture when changing the grinding wheel. However, the worker often cannot control the tilt angle well when manually pulling out the grinding wheel 2 due to its weight, which leads to the need for multiple workers to cooperate and make subsequent adjustments.

[0037] During the long-term operation of the SD5 shredder, the inventors discovered that due to the high frequency of grinding wheel replacement, the pneumatic springs are under high pressure for extended periods. As a result, the pneumatic springs are prone to bulging, damage, surface wear, and air leakage. These problems can affect the normal operation of the pneumatic springs and may even lead to equipment failure. Furthermore, if the pneumatic springs malfunction during grinding wheel replacement, it may cause the grinding wheel machine 2 to sink and shake, resulting in losses to equipment and personnel.

[0038] like Figure 1-9As shown in the figure, this embodiment of the invention proposes a grinding wheel 2 replacement and reset device for an SD5 shredder, including abutment plates 3 symmetrically arranged on the outer sides of two fixed plates 21, each abutment plate 3 having an abutment portion 31. Driving components for swinging the grinding wheel 2 are respectively provided between the two fixed plates 21 and the base 1. Support components 6 are provided on both sides of the base 1 corresponding to the abutment plates 3. The support components 6 have an idle state and an operating state. When the grinding wheel 2 is in the operating position, the support components 6 are in the idle state, and at this time, the support components 6 are not in contact with the abutment plates 3. A power component 7 is provided on the base 1 for switching the state of the support components 6. When the grinding wheel 2 swings to a preset replacement position, the power component 7 switches the support components 6 from the idle state to the operating state. When the support components 6 are in the operating state, the support components 6 move to the position corresponding to the abutment portion 31, so that the abutment portion 31 can abut against the support components 6.

[0039] In practice, the driving component can be a motor or a lead screw mechanism. A mounting plate 81 is set on the equipment, and the lead screw is mounted on the mounting plate 81 and rotates along the front and back direction of the slicing machine. The motor is fixed to the base 1 by bolts, and the output end of the motor is fixedly connected to one end of the lead screw. A guide rod parallel to the lead screw is also fixed on the mounting plate 81. A sliding seat is connected to the surface of the lead screw, and the sliding seat is threaded with the lead screw. A through hole is opened on the sliding seat for the guide rod to pass through. A connecting rod is directly set between the sliding seat and the fixed plate 21. The two ends of the connecting rod are hinged to the sliding seat and the fixed plate 21, respectively. The motor drives the lead screw to rotate, thereby causing the sliding seat to move along the lead screw axis, and then drives the grinding wheel 2 to swing through the connecting plate. In this embodiment, the driving component includes a telescopic member 5, which can be a cylinder, a hydraulic rod, or an electric telescopic rod. In this embodiment, the telescopic member 5 is preferably a cylinder. One end of the telescopic member 5 is hinged to the base 1, and the telescopic end of the telescopic member 5 is hinged to the fixed plate 21. The hinge axis between the telescopic member 5 and the base 1, and the hinge axis between the telescopic member 5 and the fixed plate 21 are both parallel to the width direction of the base 1. By extending and retracting the telescopic member 5 and controlling its extension stroke, the grinding wheel 2 can be quickly, efficiently, and accurately driven to swing outward from the base 1 to the replacement position. The telescopic member 5 supports the grinding wheel 2, eliminating the need for manual operation. The structure is simple, the operation is convenient, time and labor are saved, and safety hazards are reduced.

[0040] In fact, a slot can be made on the lower side of the abutment plate 3, which is the abutment part 31 of the abutment plate 3. In this embodiment, the abutment plate 3 is an arc-shaped plate, the center of the abutment plate 3 is located on the swing axis of the grinding wheel 2, the outer arc surface of the abutment plate 3 is located at the lower part of the abutment plate 3, the outer arc surface of the abutment plate 3 is serrated, and the serrated teeth are oblique teeth, so that the outer side of the abutment plate 3 is ratchet-shaped, the outer arc surface of the abutment plate 3 forms the abutment part 31, one end of the side wall of the abutment plate 3 is fixedly connected to the bottom position of the outer side of the fixing plate 21, and the other end extends to the rear end of the base 1 to form a suspended end. This structural design is simple, and the grinding wheel 2 can be positioned at multiple angles by abutting against the support component 6 through the abutment plate 3, avoiding the grinding wheel 2 from sinking and shaking, making the application more flexible and versatile, and highly practical.

[0041] A reinforcing plate 4 is inclinedly arranged between the inner side of the abutment plate 3 and the fixing plate 21. The two ends of the reinforcing plate 4 are fixedly connected to the inner side wall of the abutment plate 3 near the suspended end and the outer side wall of the fixing plate 21, respectively. The abutment plate 3, the reinforcing plate 4 and the fixing plate 21 together form a triangular structure, which has strong stability and stronger load-bearing capacity.

[0042] The support assembly 6 includes a support rod 61 located below the abutment plate 3. The middle of the support rod 61 is rotatably mounted on the middle of the side wall of the base 1. One end of the support rod 61 is inclined from bottom to top towards the front end of the base 1 to form an abutment end 611. By rotating the support rod 61, the abutment end 611 of the support rod 61 can abut against the teeth of the outer arc surface of the abutment plate 3, thereby providing stable support for the grinding wheel 2, fixing the position of the grinding wheel 2, preventing the grinding wheel 2 from sinking or shaking, and ensuring that the grinding wheel 2 remains stable during replacement. The other end of the support rod 61 is inclined from bottom to top towards the rear end of the base 1 to form a contact end 612. The power assembly 7 is located at the rear end of the base 1 and is connected to the contact ends 612 of the two support rods 61 respectively.

[0043] A first spring 62 is provided between the support rod 61 and the base 1. Specifically, a support plate 63 is fixedly provided on the outer wall of the base 1 below the contact end 612 of the support rod 61. The first spring 62 is located between the support plate 63 and the contact end 612 of the support rod 61. The two ends of the first spring 62 are fixedly connected to the support plate 63 and the contact end 612 of the support rod 61, respectively. The first spring 62 causes the contact end 612 of the support rod 61 to tend to drive the abutment end 611 of the support plate away from the outer arc surface of the abutment plate 3. In this embodiment, the structure of the support rod 61 is similar to a lever. Under the action of the first spring 62, the abutment end 611 of the support rod 61 always remains in contact with the abutment plate 3.

[0044] In practice, the power assembly 7 can be two cylinders, both of which are fixedly mounted on the base 1 by bolts. The telescopic ends of the two cylinders are in movable contact with the contact ends 612 of the two support rods 61, respectively. By telescoping the two cylinders, the rotation of the two support rods 61 can be controlled simultaneously. The power assembly 7 includes a mounting cylinder 71 and a transmission rod 72. The mounting cylinder 71 is vertically fixed to the middle of the rear end face of the base 1. The mounting cylinder 71 has an internal cavity and is closed at one end and open at the other. An electromagnetic drive assembly is installed inside the mounting cylinder 71. The transmission rod 72 is located at the open end of the mounting cylinder 71. Both ends of the transmission rod 72 are in movable contact with the contact ends 612 of the two support rods 61, respectively. One end of the electromagnetic drive assembly extends out of the open end of the mounting cylinder 71 and is connected to the middle of the transmission rod 72. In this embodiment, the transmission rod 72 is in the shape of an inverted "Ω". The two ends of the transmission rod 72 are located above the contact ends 612 of the two support rods 61. The electromagnetic drive assembly is used to connect to an external power source, and when the electromagnetic drive assembly is energized, it can provide a driving force for the transmission rod 72 to move in the vertical direction.

[0045] The electromagnetic drive assembly includes an electromagnet 73 and a moving iron core 74. The electromagnet 73 is disposed at the closed end of the mounting cylinder 71. The moving iron core 74 is movably disposed in the cavity of the mounting cylinder 71, with one end of the moving iron core 74 extending out of the mounting cylinder 71 and fixedly connected to the middle of the transmission rod 72. The cavity wall is provided with an annular groove 76. An annular abutment 75 is fixedly sleeved on the outer wall of the moving iron core 74. A second spring 77 is sleeved on the surface of the moving iron core 74. Both the abutment 75 and the second spring 77 are located in the annular groove 76. One end of the second spring 77 is fixedly connected to the abutment 75, and the other end is fixedly connected to the inner wall of the annular groove 76. In this embodiment, when the electromagnet 73 is energized, a repulsive force is generated between the electromagnet 73 and the moving iron core 74, causing the moving iron core 74 to press down the transmission rod 72, thereby driving the support rod 61 to move downward against the elastic force of the first spring 62, so that the abutting end 611 of the support rod 61 maintains tooth contact with the outer arc surface of the abutting plate 3, that is, the support assembly 6 changes from an idle state to a working state. At this time, the abutting end 611 of the support plate is similar to a pawl structure, so that the grinding wheel 2 can only swing outward from the base 1.

[0046] The grinding machine 2 has a rotating shaft 22 fixed on both sides of its top. The grinding machine 2 is rotatably mounted on the base 1 via the rotating shaft 22. The rotating shaft 22 passes through the base 1 and extends out of the base 1. An incomplete gear 23 is fixedly fitted on the surface of the part of the rotating shaft 22 outside the base 1. A triggering component 8 is provided on the base 1. The triggering component 8 cooperates with the incomplete gear 23 so that when the grinding machine 2 rotates to a preset angle, the electromagnet 73 can be energized or de-energized. A battery (not shown in the figure) is installed on the base 1. The trigger assembly 8 includes mounting plates 81 symmetrically fixed on both sides of the base 1. The length direction of the mounting plates 81 is parallel to the length direction of the base 1. A dovetail groove 82 is formed through the upper surface of the mounting plates 81 in the front-back direction. A U-shaped plate 83 is provided between the two mounting plates 81. The two wings of the U-shaped plate 83 are slidably embedded in the dovetail groove 82. The web of the U-shaped plate 83 is located at the rear end of the base 1. The ends of the two wings of the U-shaped plate 83 are respectively provided with racks 84 for meshing with the incomplete gear 23. A conductive strip 85 is embedded in the inner side wall of the U-shaped plate 83. A conductive sheet is embedded in the side wall of each of the two dovetail grooves 82. The conductive sheet is electrically connected to the electromagnet 73 and the output end of the battery through a wire.

[0047] In this embodiment, when the driving component drives the grinding wheel 2 to swing, the rotating shaft 22 rotates, thereby driving the incomplete gear 23 to rotate. The incomplete gear 23 meshes with the rack 84, causing the U-shaped plate 83 to slide in the dovetail groove 82, so that the two ends of the conductive strip 85 contact the two conductive plates, and the electromagnet 73 is energized.

[0048] Working principle:

[0049] When the grinding wheel 2 of the SD5 shredder is in operation, it is tilted 15-20° inward. When the grinding wheel needs to be replaced, the power supply to the equipment is cut off, a warning sign is hung in a conspicuous position on the equipment, and after the operator puts on protective equipment, he finds and unlocks the locking mechanism of the grinding wheel 2 fixed in the machine housing. The telescopic part 5 is extended, which drives the grinding wheel 2 to swing outward to the base 1. When the grinding wheel 2 swings to tilt outward to the base 1, the incomplete gear 23 causes the U-shaped plate 83 to move through the rack 84. At this time, the two ends of the conductive strip 85 are not in contact with the conductive sheet, the electromagnet 73 is in the de-energized state, and the abutting end 611 of the support plate is separated from the abutting part 31 of the abutting plate 3.

[0050] The grinding wheel 2 continues to swing outward from the base 1 until its axis makes an angle of 35-40° with the vertical direction. At this point, both ends of the conductive strip 85 are in contact with the conductive sheet, the electromagnet 73 is energized, and the moving iron core 74 overcomes the elastic force of the second spring 77 to press down on the transmission rod 72. The transmission rod 72 drives the two support rods 61 to overcome the elastic force of the first spring 62 and rotate simultaneously, so that the abutting end 611 of the support plate contacts the teeth on the outer arc surface of the abutting plate 3. It should be noted that when the abutting end 611 of the support plate contacts the teeth on the outer arc surface of the abutting plate 3... When the teeth on the outer arc surface of plate 3 make contact, a certain gap is reserved between the end face of the abutting end 611 and the side wall of the tooth in contact at that location. This gap allows the abutting end 611 of the support rod 61 to rotate back to its original position when the grinding wheel 2 swings back to reset, thereby separating from the abutting plate 3. That is, the abutting end 611 of the support plate contacts the abutting part 31 of the abutting plate 3 but does not support it. The grinding wheel 2 is supported by the telescopic component 5. The grinding wheel 2 swings from the operating position to the replacement position in a simple and efficient manner, without the need for manual operation by the worker, and is highly safe. When the grinding wheel 2 is in the replacement position, if the telescopic component 5 fails during the process of changing the grinding wheel, the grinding wheel 2 will be supported by the support plate at a very small angle of swing back, and the grinding wheel 2 will not sink or shake, further improving the safety and practicality of use.

[0051] After the grinding wheel is replaced, the telescopic component 5 drives the grinding machine 2 to swing back. At this time, the incomplete gear 23 drives the U-shaped plate 83 to move back through the rack 84. The two ends of the conductive strip 85 immediately separate from the two conductive plates, the electromagnet 73 is de-energized, and under the action of the second spring 77, the moving iron core 74 moves up and resets. Under the action of the first spring 62, the support plate rotates, and the abutting end 611 of the support plate separates from the abutting part 31 of the abutting plate 3, without affecting the grinding machine 2 returning to the operating position.

[0052] The grinding wheel replacement and reset device for the SD5 shredder provided by this invention is easy to operate. The grinding wheel 2 swings quickly, efficiently, and accurately, and is highly safe to use. It avoids the grinding wheel 2 sinking and shaking during grinding wheel replacement due to the failure of the telescopic component 5. When the telescopic component 5 fails, and the grinding wheel 2 sinks and shakes, the abutting end 611 of the support plate and the abutting part 31 of the abutting plate 3 press tightly against each other, forming a stable support for the grinding wheel 2 and preventing personnel and equipment losses.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications and substitutions should be covered within the scope of the claims of the present invention. Technical aspects, shapes, and structures not described in detail in this invention are all well-known technologies.

Claims

1. A grinding wheel replacement and reset device for an SD5 shredder, applied to the grinding wheel of an SD5 shredder, wherein fixing plates are symmetrically fixed at the center of the left and right sides of the grinding wheel of the SD5 shredder, characterized in that: The grinding wheel replacement and reset device includes abutment plates symmetrically arranged on the outer sides of the two fixed plates. Each abutment plate has an abutment portion. A drive component for driving the grinding wheel to swing is respectively provided between the two fixed plates and the base. Support components are provided on both sides of the base corresponding to the abutment plates. The support components have an idle state and an active state. When the support component is in the idle state, it does not contact the abutment plate. A power component for switching the state of the support component is provided on the base. When the grinding wheel swings to the preset replacement position, the power component switches the support component from the idle state to the active state. When the support component is in the active state, it is located at the position corresponding to the abutment portion, so that the abutment portion can abut against the support component. The abutment plate is an arc-shaped plate, the outer arc surface of the abutment plate is located at the lower part of the abutment plate, and the outer arc surface of the abutment plate is serrated to form the abutment part; The support assembly includes a support rod located below the abutment plate. The support rod is rotatably mounted on the side wall of the base at its middle section. One end of the support rod is inclined from bottom to top toward the front end of the base and forms an abutment end. The abutment end of the support rod can abut against the outer arc surface of the abutment plate. The other end of the support rod is inclined from bottom to top toward the rear end of the base and forms a contact end. The power assembly is located at the rear end of the base and is connected to the contact ends of the two support rods respectively. A first spring is provided between the support rod and the base, and the first spring causes the abutting end of the support rod to tend to move away from the outer arc surface of the abutting plate; The power assembly includes a mounting cylinder and a transmission rod. The mounting cylinder is vertically fixed to the rear end face of the base. The mounting cylinder has an internal cavity and is closed at one end and open at the other end. An electromagnetic drive assembly is installed inside the mounting cylinder. The transmission rod is located at the open end of the mounting cylinder. Both ends of the transmission rod are connected to the contact ends of the two support rods respectively. One end of the electromagnetic drive assembly extends out of the open end of the mounting cylinder and is connected to the transmission rod. The electromagnetic drive assembly includes an electromagnet and a moving iron core. The electromagnet is disposed at the closed end of the mounting cylinder. The moving iron core is movably disposed in the cavity of the mounting cylinder, with one end of the moving iron core extending out of the mounting cylinder and fixedly connected to the transmission rod. The cavity wall is provided with an annular groove. A stop member is provided on the outer wall of the moving iron core. A second spring is fitted on the surface of the moving iron core. Both the stop member and the second spring are located in the annular groove. One end of the second spring is fixedly connected to the stop member, and the other end is fixedly connected to the inner wall of the annular groove. The grinding wheel is fixed with rotating shafts on both sides of its top. The grinding wheel is rotatably mounted on the base via the rotating shafts. The rotating shafts pass through the base and extend outside the base. An incomplete gear is fixedly fitted on the surface of the part of the rotating shaft outside the base. A triggering component is provided on the base. The triggering component cooperates with the incomplete gear so that when the grinding wheel rotates to a preset angle, the electromagnet can be energized or de-energized.

2. The grinding wheel replacement and reset device for an SD5 shredder according to claim 1, characterized in that: The driving component includes a telescopic component, one end of which is hinged to the base, and the telescopic end of which is hinged to the fixed plate. The hinge axis between the telescopic component and the base and the hinge axis between the telescopic component and the fixed plate are parallel.

3. The grinding wheel replacement and reset device for an SD5 shredder according to claim 1, characterized in that: A reinforcing plate is inclinedly arranged between the inner side of the abutment plate and the fixing plate.

4. The grinding wheel replacement and reset device for an SD5 shredder according to claim 1, characterized in that: A battery is mounted on the base. The triggering assembly includes mounting plates symmetrically arranged on both sides of the base. The top of each mounting plate has a downwardly recessed dovetail groove. A U-shaped plate is positioned between the two mounting plates. The two wings of the U-shaped plate are slidably embedded in the dovetail groove. The web of the U-shaped plate is located at the rear end of the base. The ends of the two wings of the U-shaped plate are respectively provided with racks for meshing with incomplete gears. A conductive strip is embedded in the inner sidewall of the U-shaped plate. A conductive sheet is embedded in the sidewall of each of the two dovetail grooves. The conductive sheet is electrically connected to the electromagnet and the output terminal of the battery through a wire.

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