Steel sheet unloading device and steel sheet transport production line thereof

Abstract

This invention relates to a steel plate unloading device and its steel plate transport production line in the field of production line conveying equipment technology. The device includes a conveyor frame, a stop bar, and a pushing mechanism. The conveyor frame comprises a frame and rollers, with multiple rollers installed side-by-side at an incline on the frame. The two ends of each roller are designated as the high end and the low end, with the high end having a higher horizontal height than the low end. A stop bar is installed on the frame on the low end side, with its apex height lower than the surface height of the middle position of the roller. The middle position of the roller refers to the position between the high end and the low end. The pushing mechanism includes a power cylinder connected to the frame or a base surface. The telescopic shaft of the power cylinder extends and abuts against the steel plate on the low end, pushing it upwards to the apex of the stop bar. The steel plate then slides down under its own weight. This invention has a simple and compact structure, is easy to operate, and solves the problems of low efficiency and high risk associated with manual handling or unloading via hoisting.

Description

Technical Field

[0001] This invention relates to the field of production line conveying equipment technology, specifically to a steel plate unloading device and its production line. Background Technology

[0002] Currently, there is no dedicated steel plate pushing device. In actual production, samples are generally handled manually. Considering that the samples are often heavy and sharp, there are certain safety risks. Mechanical sample pushing devices also exist, but they typically push the sample directly down along its length or width, which can easily cause deformation or damage to the sample surface. Existing patents do not include a dedicated steel plate pushing device.

[0003] A search of existing technologies revealed Chinese Utility Model Patent Publication No. CN210480038U, which discloses a sheet metal processing production line and its unloading device. The unloading device includes a conveyor belt, a baffle mechanism, and an unloading mechanism. The baffle mechanism includes a baffle assembly and a lifting assembly. The baffle assembly includes a crossbar and a baffle plate. The crossbar spans across the conveyor belt. The unloading mechanism includes a fork and a moving assembly. The fork includes multiple spaced-apart forks. The fork can move to the unloading height under the drive of the moving assembly. When the fork is at the unloading height, part of the baffle plate is inserted into the gaps between the forks, and the forks can move horizontally relative to the baffle plate, causing the workpiece to be unloaded on the forks to fall onto the conveyor belt. This utility model patent technology is not suitable for unloading steel plates. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a steel plate unloading device and a steel plate transportation production line thereof.

[0005] A steel plate unloading device according to the present invention includes a conveying frame, a stop bar, and a pushing mechanism;

[0006] The conveyor frame includes a frame and rollers. Multiple rollers are installed side by side at an incline on the frame. The two ends of each roller are referred to as the high end and the low end, respectively. The horizontal height of the high end is higher than that of the low end.

[0007] A stop bar is installed on the frame located on the lower side, with the height of the top point being lower than the surface height of the middle position of the roller. The middle position of the roller refers to the middle position located between the higher side and the lower side.

[0008] The jacking mechanism includes a power cylinder, which is connected to the frame or base surface. The telescopic shaft of the power cylinder extends and abuts against the steel plate at the lower end and pushes it upward to the top of the stop bar. The steel plate then slides down due to its own gravity.

[0009] In some embodiments, the pushing mechanism further includes a push rod, one end of which is located between two adjacent lower ends, and the other end of which is located below the roller and rotatably connected to the frame or base surface. The telescopic shaft of the power cylinder is connected between the two ends of the push rod, and the connection point between the telescopic shaft of the power cylinder and the push rod is close to the lower end.

[0010] The telescopic shaft of the power cylinder pushes the push rod upward. The end of the push rod located between the lower ends moves upward in a rotating manner, pushing the side of the steel plate located at the lower end upward to the top of the stop bar. The steel plate then slides down due to its own gravity.

[0011] In some embodiments, the push rod is provided with ball bearings, which are elastically disposed on the end face of the push rod that contacts the steel plate.

[0012] In some embodiments, there are multiple push rods arranged side by side at intervals, and the ends of the multiple push rods are connected as one unit by a connecting rod.

[0013] In some embodiments, there are multiple stop bars arranged side by side.

[0014] In some embodiments, the stop bar is inclined on the frame, and the apex of the stop bar is inclined outward away from the lower side end.

[0015] In some embodiments, the stop lever includes an arcuate segment, which is the upper portion of the stop lever that extends a distance from its apex toward the other end.

[0016] In some embodiments, the angle between the axis of the roller and the horizontal plane is 30°-60°.

[0017] In some embodiments, a position sensor is also included to detect the position information of the steel plate, and the power cylinder operates based on the information transmitted by the position sensor.

[0018] The present invention also provides a steel plate transport production line, including the steel plate unloading device. Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention has a simple and compact structure and is easy to operate, which solves the problems of low efficiency and high risk that exist in manual handling or unloading by hoisting.

[0020] 2. By optimizing the tilt angle of the roller and the height difference between the stop bar and the high side of the roller, this invention can solve the problem of jamming between the steel plate and the stop bar, improve unloading efficiency, and prevent the steel plate from sliding at a large speed due to excessive tilt angle, which would generate a large impact force and cause equipment damage or steel plate deformation.

[0021] 3. This invention optimizes the design of the jacking mechanism by setting a push rod, a load-bearing component for transmitting the driving force of the power cylinder, thereby solving the problem of frequent jamming between the drive shaft of the power cylinder and the steel plate due to sudden contact and improving the unloading efficiency of the steel plate.

[0022] 4. This invention improves the steel plate unloading efficiency by optimizing the structural design of the stop bar in the overall device. Attached Figure Description

[0023] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a side view of the present invention;

[0026] Figure 3 This is a structural view of the pushing mechanism of the present invention. Detailed Implementation

[0027] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0028] Example 1

[0029] This invention provides a steel plate unloading device, such as... Figures 1-3As shown, the system includes a conveyor frame 1, stop bars 2, and a pushing mechanism 3. The conveyor frame 1, serving as the carrier for transporting steel plates, mainly comprises a frame 11 and multiple rollers 12 arranged side-by-side on the frame 11. The rollers 12 are installed on the frame 11 at an angle, meaning there is an angle α between the axis of the rollers 12 and the horizontal plane. This angled installation of the rollers 12 is achieved by setting the frame 11 as a right-angled trapezoidal frame structure, with both ends of the rollers 12 rotatably connected to the two sides of the frame 11 where there is a height difference. The two ends of the rollers 12 on the frame 11 are a high side end 121 and a low side end. The high side end 121 refers to the end with a higher horizontal position, and the low side end refers to the end with a lower horizontal position relative to the high side end 121. Stop bars 2 are installed on the side of the frame 11 connecting to the low side end; multiple stop bars 2 are arranged side-by-side. When the steel plate is transported on the inclined roller 12, the side of the steel plate abuts against the stop bar 2, which prevents the steel plate on the roller 12 from slipping off. The height of the top of the stop bar 2 installed on the side of the frame 11 is lower than the surface height of the middle position of the roller 12. The middle position of the roller 12 refers to the position between the high side end 121 and the low side end.

[0030] The jacking mechanism 3 includes a power cylinder 31, which is a pneumatic or hydraulic cylinder with a telescopic shaft. The power cylinder 31 is located below the roller 12 and is mounted on a base surface or on the frame 11. When the power cylinder 31 is mounted on the frame 11, it is mounted on the corresponding frame structure plate at the bottom of the frame 11. When the power cylinder 31 is mounted on a base surface, the base surface refers to the mounting platform or ground located below the frame 11. During installation, the connection and fixation can be achieved through brackets or corresponding mounting bases. At this time, the telescopic shaft of the power cylinder 31 is located between two adjacent lower ends. When the power cylinder 31 is activated, its telescopic shaft moves upward and contacts the steel plate located on the lower end. As the telescopic shaft continues to move upward, it pushes one side of the steel plate upward.

[0031] The working principle of this invention is as follows: During the transportation of the steel plate on the inclined roller 12, the bottom of the stop bar 2 contacts the edge of the steel plate and effectively prevents the inclined steel plate from slipping, ensuring smooth transportation of the steel plate. When the steel plate is transported to the predetermined position, the power cylinder 31 is activated, and the telescopic shaft of the power cylinder 31 pushes the side of the steel plate located at the lower end upward. The other side of the steel plate located at the higher end 121 does not slide or only slides slightly. Here, sliding refers to the sliding of the steel plate relative to the surface of the roller 12. As the telescopic shaft of the power cylinder 31 continues to extend outward, the height of the side of the steel plate located at the lower end exceeds the height of the stop bar 2. At this time, because the height of the stop bar 2 is lower than the height of the higher end 121, the steel plate is still in an inclined state. And because the height of the top of the stop bar 2 is lower than the height of the middle point of the roller 12, the steel plate slides down under the action of gravity. During the sliding process, the top of the stop bar 2 can serve as a support point for the sliding. This invention has a simple and compact structure and is easy to operate, solving the problems of low efficiency and high risk that exist in manual handling or unloading by hoisting.

[0032] Preferably, the angle α between the axis of the inclined roller 12 and the horizontal plane is designed to be between 30° and 60°. When the angle α is less than 30°, the steel plate will be lifted to the top of the stop bar 2 with an excessively small inclination angle, resulting in an unsmooth slide. When the angle α is greater than 60°, the contact pressure between the edge of the inclined steel plate and the surface of the stop bar 2 is too high, requiring a large pushing force to lift the steel plate and making it prone to jamming.

[0033] Example 2

[0034] This embodiment 2 is based on embodiment 1. By optimizing the design of the jacking mechanism and setting a push rod for transmitting the pushing force of the power cylinder, it solves the problem of frequent jamming between the power cylinder's drive shaft and the steel plate due to sudden contact, thereby improving the steel plate unloading efficiency. Specifically:

[0035] The jacking mechanism 3 also includes a push rod 32, which is connected to the drive shaft of the power cylinder 31. The connection is preferably a rotatable connection, meaning the push rod 32 can rotate around its connection point with the drive shaft of the power cylinder 31. The push rod 32 is positioned between two rollers 12, with one end located between the lower ends of adjacent rollers 12. When the steel plate moves on the rollers 12, the end of the push rod 32 between the lower ends can contact the lower surface of the steel plate, or there may be a certain gap. The other end of the push rod 32 is located below the rollers 12 and is rotatably connected to the frame structure or base of the machine frame 11 via a bracket. In this case, the power cylinder 31 is preferably rotatably connected to the machine frame 11 or the base. Simultaneously, after the telescopic shaft of the power cylinder 31 is connected to the side of the push rod 32, the connection point is near the lower end, and the overall shape of the power cylinder 31 and push rod 32 after connection is approximately U-shaped.

[0036] The position of the steel plate is detected in real time by the position sensor 5. When the steel plate is transported above the push rod 32, the power cylinder 31 is activated. The extension of the telescopic shaft of the power cylinder 31 pushes the push rod 32 to rotate upward around the fulcrum. At this time, the end of the push rod 32, located between the lower ends, contacts the steel plate and pushes the side of the steel plate upward. Alternatively, after both the push rod 32 and the power cylinder 31 rotate a small arc around their respective fulcrums, the end of the push rod 32 contacts the steel plate and pushes the side of the steel plate upward. Regardless of whether the end of the push rod 32 initially contacts the surface of the steel plate or moves a small distance around the fulcrum to contact the surface of the steel plate, in the initial stage, its thrust gradually increases due to the rotation. This method avoids the problem of the edge of the steel plate getting stuck on the surface of the stop rod 2 due to a sudden large force applied to the side of the steel plate. During the upward movement of the steel plate, since both the push rod 32 and the power cylinder 31 rotate upward in a clockwise direction, the end face of the push rod 32 moves relative to the steel plate. During the relative movement, the friction generated by the two contact surfaces tends to push the steel plate towards the high side end 121, thereby reducing the pressure between the steel plate and the stop rod 2. This further avoids the problem of the steel plate and the stop rod 2 getting stuck due to the squeezing force, allowing the side of the steel plate that contacts the stop rod 2 to be lifted more smoothly, and efficiently completing the unloading of the steel plate.

[0037] Preferably, multiple push rods 32 are arranged side-by-side at intervals and are rotatably connected to the frame 11 or the base surface. These multiple push rods 32 are connected as a single unit via connecting rods 33. The telescopic shaft of the power cylinder 31 is connected to the push rod 32 located in the middle position. After connecting the multiple push rods 32 as a single unit via connecting rods 33, a single power cylinder 31 can push the multiple push rods 32 to rotate and rise synchronously, thereby pushing the side of the steel plate upwards, improving unloading efficiency while reducing costs. Preferably, the connecting rod 33 is connected to the end of the push rod 32. Here, the end of the push rod 32 refers to the end located at the lower side. After connection, the connecting rod 33 is located between the stop rod 2 and the end of the lower side.

[0038] Furthermore, a ball bearing 4 is provided on the push rod 32. The ball bearing 4 is elastically disposed on the end face of the push rod 32 that contacts the steel plate. That is, when the push rod 32 pushes the steel plate upward, the surface of the ball bearing 4 is flush with the surface of the push rod 32 and the steel plate due to the gravity of the steel plate. When the push rod 32 pushes the steel plate to the height of the height stop bar 2, the pressure on the ball bearing 4 decreases due to the smaller angle of inclination between the steel plate and the horizontal plane. In addition, the steel plate tends to slide down under the action of gravity. The elastic reaction force of the ball bearing 4 on the steel plate will help the steel plate slide down. Moreover, during the sliding process of the steel plate, the ball bearing 4 can reduce the friction between the steel plate and the push rod 32, thereby improving the unloading efficiency. In this case, although the setting of ball bearing 4 reduces the friction between push rod 32 and steel plate to a certain extent, the setting of ball bearing 4 does not cover the entire contact surface between push rod 32 and steel plate, so the overall impact is not significant. The friction between push rod 32 and steel plate can still effectively reduce the squeezing pressure between steel plate and stop rod 2 in the initial stage of pushing steel plate upward.

[0039] Example 3

[0040] This embodiment 3 is based on embodiment 1 or embodiment 2, and improves the steel plate unloading efficiency by optimizing the structural design of the stop bar in the overall device. Specifically:

[0041] The stop bar 2 mounted on the frame 11 is inclined, with the stop bar 2 forming a certain angle with the side of the frame 11, and the stop bar 2 tilting outwards from the frame 11, meaning the apex of the stop bar 2 tilts away from the lower side. When the stop bar 2 is inclined, the angle between the stop bar 2 and the roller 11 is preferably 90°. At this time, the edge of the steel plate placed on the roller 11 can contact the root surface of the stop bar 2 in a basically parallel manner. Since the stop bar 2 is inclined outwards, the stop bar 2 can significantly reduce the obstruction to the side of the rising steel plate when the side of the steel plate is initially pushed up and during the process of moving above the apex of the stop bar 2, thus greatly reducing the jamming problem between the two.

[0042] Preferably, the upper end of the stop lever 2 is an arc-shaped segment, where "upper end" refers to a certain distance extending from the apex of the stop lever 2 towards the other end. When the upper end of the stop lever 2 is an arc-shaped segment, regardless of whether the stop lever 2 is tilted or not, the upper end of its arc-shaped structure can reduce the friction between it and the steel plate, making the sliding of the steel plate smoother and improving the unloading efficiency of the steel plate.

[0043] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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, they should not be construed as limitations on this application.

[0044] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A steel plate unloading device, characterized in that, It includes a conveyor frame (1), a stop bar (2), and a jacking mechanism (3); The conveyor frame (1) includes a frame (11) and rollers (12). Multiple rollers (12) are installed side by side at an incline on the frame (11). The two ends of the rollers (12) are respectively referred to as the high side end (121) and the low side end (122). The horizontal height of the high side end (121) is higher than that of the low side end (122). A stop bar (2) is installed on the frame (11) located on the side of the lower end (122). The height of the top of the stop bar is lower than the surface height of the middle position of the roller (12). The middle position of the roller (12) refers to the middle position between the higher end (121) and the lower end (122). The pushing mechanism (3) includes a power cylinder (31), which is connected to the frame (11) or the base surface. The telescopic shaft of the power cylinder (31) extends and abuts against the steel plate of the lower end (12) and pushes it upward to the top of the stop bar (2). The steel plate slides down by its own weight. The pushing mechanism (3) further includes a push rod (32), one end of which is located between two adjacent lower ends, and the other end of which is located below the roller (12) and rotatably connected to the frame (11) or the base surface. The telescopic shaft of the power cylinder (31) is connected between the two ends of the push rod (32), and the connection point between the telescopic shaft of the power cylinder (31) and the push rod (32) is close to the lower end. The telescopic shaft of the power cylinder (31) pushes the push rod (32) to move upward. The end of the push rod (32) located between the lower side ends (122) moves upward in a rotating manner, pushing the side of the steel plate located at the lower side end to move upward to the top of the stop bar (2). The steel plate slides down by its own weight. The angle between the axis of the roller (12) and the horizontal plane is 30°-60°.

2. The steel plate unloading device according to claim 1, characterized in that, The push rod (32) is provided with a ball (4), which is elastically disposed on the end face of the push rod (32) that contacts the steel plate.

3. The steel plate unloading device according to claim 2, characterized in that, The push rod (32) consists of multiple rods, which are arranged side by side at intervals, and the ends of the multiple push rods (32) are connected as one unit by a connecting rod (33).

4. The steel plate unloading device according to claim 1, characterized in that, The stop bar (2) consists of multiple bars, which are arranged side by side.

5. The steel plate unloading device according to claim 1 or 4, characterized in that, The stop bar (2) is inclined on the frame (11), and the apex of the stop bar (2) is inclined outward in a direction away from the lower side end (122).

6. The steel plate unloading device according to claim 5, characterized in that, The stop bar (2) includes an arc segment, which is the upper part of the stop bar (2) extending a distance from the vertex to the other end.

7. The steel plate unloading device according to claim 1, characterized in that, It also includes a position sensor (5), which is used to detect the position information of the steel plate, and the power cylinder (31) performs an action based on the information transmitted by the position sensor (5).

8. A steel plate transport production line, characterized in that, Includes the steel plate unloading device as described in any one of claims 1-7.

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