A device for reducing paint damage on the back of steel plates during cutting.

Abstract

This utility model discloses a device for reducing paint damage on the back of steel plates during cutting, belonging to the field of steel plate processing technology. It includes a positioning cylinder A and a positioning cylinder B, with positioning cylinder A positioned above positioning cylinder B and both positioned in the same vertical plane. Multiple positioning cylinders A and B are symmetrically rotatably connected to a frame. Each positioning cylinder A has abutment cylinders at both ends, which are slidably mounted on the frame. The relative height of the bottom of the frame is lower than the gap between positioning cylinders A and B, and the gap between positioning cylinders A and B is equal to the thickness of the steel plate. The device also includes a connecting assembly for slidingly guiding the abutment cylinders, and a transmission assembly for synchronously rotating positioning cylinders A and B in the same longitudinal row in opposite directions. This utility model can prevent vibration during steel plate cutting.

Description

Technical Field

[0001] This utility model belongs to the field of steel plate processing technology, and in particular relates to a device for reducing paint damage on the back of steel plates during cutting. Background Technology

[0002] Steel plates are flat rectangular steel materials formed by pouring molten steel and then cooling and pressing them. They can be directly rolled or cut from wide steel strips. When cutting steel plates, the vibration of the cutting head is transmitted to the steel plate, causing the steel plate to resonate. At this time, the paint layer on the back of the steel plate is subjected to alternating shear stress. When the shear stress exceeds the adhesion strength of the coating, it will break. A structure to avoid the vibration of the steel plate is proposed. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a device for reducing paint damage on the back of steel plates during cutting, thus solving the aforementioned problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a device for reducing paint damage on the back of steel plates during cutting, comprising positioning cylinder A and positioning cylinder B, wherein positioning cylinder A is positioned above positioning cylinder B and positioning cylinder A and positioning cylinder B are in the same vertical plane, and multiple positioning cylinders A and B are symmetrically rotatably connected to a frame, and both ends of positioning cylinder A are provided with abutment cylinders, which are slidably mounted on the frame, and the gap between positioning cylinders A and B is equal to the thickness of the steel plate; it also includes a connecting component for slidingly guiding the abutment cylinders; and a transmission component for synchronously rotating positioning cylinders A and B in the same longitudinal row in opposite directions.

[0005] Beneficial effects

[0006] This invention provides a device for reducing paint damage on the back of steel plates during cutting, which has the following advantages compared with the prior art:

[0007] The user positions the steel plate to be cut horizontally between positioning cylinders A and B, ensuring one end of the steel plate contacts the first set of positioning cylinders A and B. The user then simultaneously starts multiple motors A. Positioning cylinders A and B begin to rotate synchronously under the meshing of their gears. Since the distance between positioning cylinders A and B equals the thickness of the steel plate, the steel plate between them is fed and circulated forward until the entire steel plate is positioned between the positioning cylinders A and B. At this point, the user shuts off multiple motors A. This multi-point positioning of the steel plate by multiple sets of positioning cylinders A and B increases the number of constraint points, dispersing localized stress and significantly improving overall rigidity, thus preventing resonance during cutting. At this point, part of the steel plate is positioned between the two sets of shafts. When cutting the steel plate, the user should start motor B, causing motor B to drive the fixed connection on its output shaft. The shaft rotates at a constant speed, causing the symmetrically connected cams on the shaft to rotate synchronously. Since the guide cylinders are rotatably connected to the eccentric part of the cams, they gradually come into contact with the steel plate during shaft rotation. The steel plate is then pressed against the central axis of the two shafts in the same vertical plane, thus applying pre-pressure to the steel plate through the cooperation of the two sets of guide cylinders, further preventing resonance. The user can then use a handheld small cutting device to cut the steel plate between the two horizontal guide cylinders. If the cutting range needs to be expanded, the user can restart multiple motors A, causing the steel plate to begin horizontal linear movement. During this process, since the guide cylinders are rotatably mounted on the cams, they can roll on the steel plate, continuing to apply pre-pressure. Simultaneously, the entire steel plate is positioned between multiple positioning cylinders A and B during cutting. During cutting, attention should be paid to the maximum cutting length to avoid prolonged cutting, and intermittent cutting should be used to prevent continuous heat conduction. Attached Figure Description

[0008] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0009] Figure 2 This utility model Figure 1 A schematic diagram of the structure of region A in the diagram.

[0010] Figure 3 This utility model Figure 1 A magnified schematic diagram of the structure of region B in the image.

[0011] Figure 4 This is a side view of the structure of this utility model.

[0012] Figure reference numerals: Frame 101, Positioning cylinder A201, Positioning cylinder B202, Abutment cylinder 203, Connecting frame 204, Slide cylinder 205, Slide rod 206, Left-hand lead screw 207, Right-hand lead screw 208, Motor 209, Motor A301, Shaft 302, Cam 303, Guide cylinder 304, Motor B305, Gear 306. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0014] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0015] Please see Figures 1-4 This invention provides an embodiment of a device for reducing paint damage on the back of a steel plate during cutting, comprising a positioning cylinder A201 and a positioning cylinder B202. The positioning cylinder A201 is positioned above the positioning cylinder B202, and the positioning cylinders A201 and B202 are in the same vertical plane. Multiple positioning cylinders A201 and B202 are symmetrically rotatably connected to a frame 101. The two ends of the positioning cylinder A201 are provided with abutment cylinders 203, which are slidably disposed on the frame 101. The relative height of the bottom end of the frame 101 is lower than the gap between the positioning cylinders A201 and B202, and the gap between the positioning cylinders A201 and B202 is equal to the thickness of the steel plate.

[0016] It also includes a connecting component for slidingly guiding the stop cylinder 203; and a transmission component for synchronously rotating the positioning cylinders A201 and B202 in the same column in opposite directions.

[0017] Regarding the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific positioning cylinder A201 described in the above embodiments. For example, the positioning cylinder A201 and positioning cylinder B202 are covered with rubber washers. The purpose of this setting is to increase the contact damping between them and the steel plate, thereby preventing the steel plate from slipping.

[0018] Specifically, the transmission assembly includes a gear 306. One end of the positioning cylinder A201 and the positioning cylinder B202 both extend through the frame 101 and are fixedly connected to the gear 306. The two gears 306 mesh with each other. The other end of the positioning cylinder B202 is fixedly connected to the output shaft of the motor A301, and the motor A301 is fixedly connected to the frame 101.

[0019] It also includes a positioning component for applying preload to the steel plate in the cutting direction.

[0020] Regarding the above examples, those skilled in the art should understand that the implementation of the above technical solutions is not limited to the specific motors A301, 209, and B305 described in the above embodiments. For example, motors A301, 209, and B305 are all selected as motors with self-locking effects. The purpose of this setting is to prevent the output shaft from reversing if an external force is applied to it after it has stopped and entered the standby state.

[0021] Specifically, the adjustment assembly includes a connecting frame 204 and a sliding cylinder 205. The abutment cylinder 203 is rotatably connected to the connecting frame 204. When the abutment cylinder 203 is in the initial position, the connecting frame 204 is attached to the inner wall of the frame 101. The connecting frame 204 is fixedly connected to the bottom of the sliding cylinder 205. The two sliding cylinders 205 are slidably connected to the sliding rod 206, and the sliding rod 206 is fixedly connected to the frame 101.

[0022] It also includes an adjustment component for adjusting the distance between the two abutment cylinders 203.

[0023] For the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific connecting frame 204 described in the above embodiments. For example, the connecting frame 204 should be made of hard steel. The purpose of this arrangement is to facilitate the avoidance of its breakage under stress.

[0024] Specifically, the adjustment assembly includes a left-hand lead screw 207 and a right-hand lead screw 208. Both the left-hand lead screw 207 and the right-hand lead screw 208 are rotatably connected to the frame 101, and the left-hand lead screw 207 and the right-hand lead screw 208 are fixedly connected to each other. The two slide cylinders 205 are respectively threaded onto the left-hand lead screw 207 and the right-hand lead screw 208.

[0025] And a drive assembly for synchronizing the rotation of the left-hand lead screw 207 and the right-hand lead screw 208.

[0026] Specifically, the drive assembly includes a motor 209, one end of the right-hand lead screw 208 is fixedly connected to the output shaft of the motor 209, and the motor 209 is fixedly connected to the frame 101. The user can start the motor 209 to make the left-hand lead screw 207 and the right-hand lead screw 208, which are fixedly connected to each other, rotate synchronously. At this time, the two abutment cylinders 203 begin to slide towards each other, thereby pressing against both sides of the steel plate to guide the steel plate to slide and avoid deviation during the sliding process.

[0027] Specifically, the positioning component includes shafts 302 and cams 303. Multiple shafts 302 are rotatably connected to the frame 101, and two adjacent shafts 302 are in the same plane. Laterally adjacent shafts 302 are located on both sides of two adjacent positioning cylinders A201. Two cams 303 are symmetrically fixedly connected to their corresponding shafts 302. A guide cylinder 304 is rotatably connected between the two cams 303, and the guide cylinder 304 is located at the eccentric position of the cam 303.

[0028] Regarding the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific guide cylinder 304 described in the above embodiments. For example, the connection between the guide cylinder 304 and the cam 303 should be further hardened and reinforced. The purpose of this setting is to facilitate the avoidance of breakage at the connection on both sides.

[0029] Specifically, one end of the shaft 302 is fixedly connected to the output shaft of the motor B305, and the motor B305 is fixedly connected to the frame 101.

[0030] In this embodiment of the invention, the user positions the steel plate to be cut horizontally between positioning cylinders A201 and B202, and makes one end of the steel plate contact the first set of positioning cylinders A201 and B202. Then, the user simultaneously starts multiple motors A301. At this time, positioning cylinders A201 and B202 begin to rotate synchronously under the engagement of gears 306 meshing with each other. Since the distance between positioning cylinders A201 and B202 is equal to the thickness of the steel plate, the plate can be wound and fed between positioning cylinders A201 and B202. The steel plate between 202 is conveyed forward in a loop until the entire steel plate is positioned between multiple positioning cylinders A201 and B202. At this point, the user can turn off multiple motors A301. This allows for multi-point positioning of the steel plate using multiple sets of positioning cylinders A201 and B202. By increasing the number of constraint points, the localized stress on the steel plate is distributed, significantly improving overall rigidity and preventing resonance during cutting. At this point, part of the steel plate is positioned between two sets of shafts 302. When cutting the steel plate, the user should start motor B305 to activate motor B302. 05 drives the shaft 302, which is fixedly connected to its output shaft, to rotate at a constant speed, and causes the cams 303, which are symmetrically connected to the shaft 302, to start rotating synchronously. At this time, since the guide cylinder 304 is rotatably connected to the eccentric part of the cam 303, the guide cylinder 304 can gradually come into contact with the steel plate during the rotation of the shaft 302. Before the central axes of the two shafts 302 in the same longitudinal row are in the same vertical plane, the steel plate is pressed. Thus, with the cooperation of the two sets of guide cylinders 304, a preload can be applied to the steel plate, thereby further preventing resonance of the steel plate. Then the user can press the two guide cylinders 304 laterally. The steel plate is cut using a handheld small cutting device. If it is necessary to expand the cutting range, the user can restart multiple motors A301 to make the steel plate start to move horizontally linearly. During this process, since the guide cylinders 304 are all rotatably set on the cam 303, they can roll on the steel plate to continue to apply pre-pressure. At the same time, during the cutting process, the entire steel plate is between multiple positioning cylinders A201 and positioning cylinder B202. When cutting, attention should be paid to the maximum cutting length to avoid long-term cutting. Intermittent cutting can block the continuous conduction of heat.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] The term "fixed connection" as used in this application refers to a connection in which parts or components are fixed without any relative movement. This includes both detachable and non-detachable connections.

[0033] (1) Detachable connection: The components are fixed together using screws, splines, wedges, etc. This type of connection can be disassembled during maintenance without damaging the parts. However, the specifications of the connecting parts used must be correct (such as the length of the bolts, keys, wedges) and properly tightened.

[0034] (2) Non-removable connections: These mainly refer to welding, riveting, and tenon joints. Since disassembly requires forging, sawing, or oxyacetylene cutting for repair or replacement, the parts generally cannot be reused. At the same time, attention should be paid to process quality, technical inspection, and remedial measures (such as correction and polishing) during connection.

[0035] The sliding connection referred to in this application means that the component can slide along a linear trajectory, and the hinge referred to in this application means that the component can rotate along an axial constraint.

[0036] In some cases, the sliding connection and hinge referred to in this application may also be damped, enabling the component to maintain in the desired position.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for reducing paint damage on the back of a steel plate during cutting, characterized in that, The system includes positioning cylinder A (201) and positioning cylinder B (202). Positioning cylinder A (201) is located above positioning cylinder B (202), and positioning cylinder A (201) and positioning cylinder B (202) are located in the same vertical plane. Multiple positioning cylinders A (201) and positioning cylinder B (202) are symmetrically rotatably connected to the frame (101). Both ends of positioning cylinder A (201) are provided with abutment cylinders (203). The abutment cylinders (203) are slidably disposed on the frame (101), and the gap between positioning cylinder A (201) and positioning cylinder B (202) is equal to the thickness of the steel plate. It also includes a connecting assembly for slidingly guiding the stop cylinder (203); and a transmission assembly for synchronously rotating the positioning cylinders A (201) and B (202) in the same column in opposite directions.

2. The apparatus for reducing paint damage on the back surface of a steel sheet during cutting according to claim 1, characterized in that, The transmission assembly includes a gear (306). One end of the positioning cylinder A (201) and the positioning cylinder B (202) both extend through the frame (101) and are fixedly connected to the gear (306). The two gears (306) mesh with each other. The other end of the positioning cylinder B (202) is fixedly connected to the output shaft of the motor A (301), and the motor A (301) is fixedly connected to the frame (101). It also includes a positioning component for applying preload to the steel plate in the cutting direction.

3. The apparatus for reducing paint damage on the back surface of a steel sheet during cutting according to claim 1, characterized in that, The connecting assembly includes a connecting frame (204) and a sliding cylinder (205). The abutment cylinder (203) is rotatably connected to the connecting frame (204). When the abutment cylinder (203) is in the initial position, the connecting frame (204) is attached to the inner wall of the frame (101). The connecting frame (204) is fixedly connected to the bottom of the sliding cylinder (205). The two sliding cylinders (205) are slidably connected to the sliding rod (206), and the sliding rod (206) is fixedly connected to the frame (101). It also includes an adjustment component for adjusting the spacing between the two abutments (203).

4. The apparatus for reducing paint damage on the back surface of a steel sheet during cutting according to claim 3, characterized in that, The adjustment assembly includes a left-hand lead screw (207) and a right-hand lead screw (208). Both the left-hand lead screw (207) and the right-hand lead screw (208) are rotatably connected to the frame (101), and the left-hand lead screw (207) and the right-hand lead screw (208) are fixedly connected to each other. The two slide cylinders (205) are respectively threaded onto the left-hand lead screw (207) and the right-hand lead screw (208). It also includes a drive assembly for synchronizing the rotation of the left-hand lead screw (207) and the right-hand lead screw (208).

5. The apparatus for reducing paint damage on the back surface of a steel sheet during cutting according to claim 4, characterized in that, The drive assembly includes a motor (209), one end of the right-hand lead screw (208) is fixedly connected to the output shaft of the motor (209), and the motor (209) is fixedly connected to the frame (101).

6. The apparatus for reducing paint damage on the back surface of a steel sheet during cutting according to claim 2, characterized by The positioning assembly includes shafts (302) and cams (303). Multiple shafts (302) are rotatably connected to the frame (101), and two adjacent shafts (302) are in the same plane. Two cams (303) are symmetrically fixedly connected to their corresponding shafts (302). A guide cylinder (304) is rotatably connected between the two cams (303), and the guide cylinder (304) is located at the eccentricity of the cam (303).

7. The apparatus for reducing paint damage on the back surface of a steel sheet during cutting according to claim 6, characterized by One end of the shaft (302) is fixedly connected to the output shaft of the motor B (305), and the motor B (305) is fixedly connected to the frame (101).

8. The apparatus for reducing paint damage on the back surface of a steel sheet during cutting according to claim 1, wherein The positioning cylinder A (201) and positioning cylinder B (202) are covered with rubber gaskets.

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