Magnetic auxiliary feeding mechanism

Abstract

The utility model discloses a kind of magnetic auxiliary feeding mechanism, including base;Object plate is connected on base by weighing sensor;At least one magnetic attraction limiting post is located in the side of the object plate;The magnetic attraction limiting post is hollow inside and is equipped with magnet, and the magnet is up and down movable in the magnetic attraction limiting post by lifting structure.The utility model aims at solving the technical problems existing in the prior art, and provides a kind of magnetic auxiliary feeding mechanism, it can fundamentally solve the steel plate sticking problem when vacuum chuck takes material, realizes the efficient, reliable separation of single steel plate.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal processing technology, specifically to a magnetic assisted feeding mechanism. Background Technology

[0002] In the fields of machinery manufacturing, sheet metal processing, and automobile manufacturing, steel plates (commonly known as "iron plates") are one of the most widely used structural materials. They are typically used to manufacture various chassis and cabinets, structural supports, protective covers, and automotive body panels. In the automated processing production lines for these parts, vacuum suction cup handling equipment is commonly used to grab and transfer stacked steel plates to achieve efficient loading and unloading.

[0003] However, in practice, when using vacuum suction cups to pick up stacked steel plates, a long-standing and thorny technical problem is that when the suction cup picks up the target steel plate (the top layer) and lifts it, it often picks up one or more adjacent lower layer steel plates as well, causing multiple steel plates to be lifted at the same time. This phenomenon is commonly referred to as "double pick-up" or "plate adhesion".

[0004] The main reasons for this problem include the following aspects: Oil film adsorption between plates: For rust prevention and lubrication, steel plates are often coated with an oil film. When steel plates are stacked tightly, the oil film between the two layers of steel plates will generate a strong liquid film adhesion force, forming a near-vacuum negative pressure state, making the two layers of steel plates seem to be "glued" together.

[0005] Plate flatness and magnetism: The steel plate itself has slight warping or unevenness, which will cause it to adhere tightly to the underlying steel plate under stacking pressure. In addition, the steel plate has a certain degree of magnetism, especially after processing such as stamping, the residual magnetism will intensify the adsorption between the plates. Utility Model Content

[0006] 1. Technical problem to be solved by the utility model

[0007] The purpose of this invention is to solve the technical problems existing in the prior art and to provide a magnetic assisted feeding mechanism that can fundamentally solve the problem of steel plate adhesion when vacuum suction cup is used for material handling, and realize efficient and reliable separation of single steel plates.

[0008] 2. Technical Solution To solve the above problems, the technical solution provided by this utility model is as follows: A magnetically assisted feeding mechanism includes a base; a carrying plate connected to the base via a weighing sensor; and at least one magnetically assisted limiting post disposed on the side of the carrying plate. The magnetically assisted limiting post is hollow inside and contains a magnet, which moves up and down within the magnetically assisted limiting post via a lifting structure.

[0009] Preferably, the lifting structure includes a motor, a pulley, and a pull rope. The pulley is controlled to rotate by the motor, and the pull rope is wound around the pulley and connected to the magnet.

[0010] Preferably, the rope pulley is located inside the magnetically retaining post, and the motor is located outside the magnetically retaining post.

[0011] Preferably, the inner wall of the magnetic limiting post is provided with a plurality of protrusions arranged along its height direction, and the protrusions abut against the magnet.

[0012] Preferably, the cross-section of the protrusion is arc-shaped.

[0013] Preferably, the magnetic limiting post is located on the long side of the carrier plate.

[0014] Preferably, the remaining sides of the loading plate are provided with auxiliary limiting posts.

[0015] Preferably, the magnet is a neodymium magnet.

[0016] 3. Beneficial effects Compared with the prior art, the technical solution provided by this utility model has the following advantages: This invention combines ingenious mechanical structure with intelligent control to achieve automated, non-contact processing of steel plate adhesion problems. It has a simple structure, significant effects, and greatly improves the loading and unloading efficiency and reliability of automated production lines. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a magnetically assisted feeding mechanism according to an embodiment of the present invention; Figure 2 This is a cross-sectional schematic diagram of a magnetically assisted feeding mechanism according to an embodiment of the present invention; 1. Base; 2. Loading plate; 3. Weighing sensor; 4. Magnetic limit post; 5. Lifting structure; 6. Auxiliary limit post; 41. Magnet; 42. Raised strip; 51. Motor; 52. Rope wheel; 53. Pull rope. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the scope of protection of this utility model.

[0019] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in the prior art and will not be elaborated further here. When a component is perpendicular or approximately perpendicular to another component, it means that the ideal state is perpendicularity, but due to manufacturing and assembly effects, there may be a certain degree of perpendicularity error. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only and do not represent the only possible implementation.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] The terms "first" and "second" in this utility model do not represent specific quantities or orders, but are merely used to distinguish names.

[0022] See Figure 1 and Figure 2 This embodiment provides a magnetic assisted feeding mechanism, which mainly includes a base 1, a loading plate 2, a weighing sensor 3, a magnetic limit post 4, and a control system.

[0023] In this embodiment, the base 1 serves as the supporting foundation for the entire mechanism, and the load plate 2 is used to support the stacked steel plates, which are connected to the base 1 through multiple weighing sensors 3.

[0024] In this embodiment, four weighing sensors 3 are preferably evenly distributed near the four corners of the carrying plate 2 to ensure accurate weighing. The weighing sensors 3 are electrically connected to the control system, which will be described in detail later, to monitor the total weight of the steel plates stacked on the carrying plate 2 in real time.

[0025] In this embodiment, an auxiliary limiting post 6 is provided on the side of the carrying plate 2 for positioning the stacked steel plates. Specifically, a magnetic limiting post 4 is provided on one long side of the carrying plate 2. Figure 2As shown, the magnetic limiting post 4 has a hollow structure inside, and its outer shell is preferably made of materials that do not attract magnets, such as stainless steel, so as to avoid the magnetic lines of force being diverted by the post itself and to ensure that the magnetic force is effectively applied to the steel plate. A magnet 41 is provided inside the magnetic limiting post 4.

[0026] In this embodiment, the magnet 41 is preferably a strong neodymium magnet to provide sufficient magnetic attraction.

[0027] In this embodiment, the magnet 41 moves up and down within the magnetic attraction limiting column 4 via a lifting structure 5. The weighing sensor 3 is connected to the control system and is used to determine the number of steel plates and estimate the stacking height of the steel plates based on the weighing results. The lifting structure 5 is controlled to adjust the height of the magnet 41 so that the magnet 41 attracts the edge of the uppermost steel plate to bend upward, thereby forming a wedge-shaped gap between the uppermost steel plate and the lower steel plate.

[0028] Specifically, the lifting structure 5 includes a motor 51, a pulley 52, and a pull rope 53. The motor 51 is fixed to the outside of the magnetic limiting post 4 via a mounting bracket, which facilitates motor maintenance and replacement. The pulley 52 is located at the upper end inside the magnetic limiting post 4 and is driven to rotate by the motor 51. One end of the pull rope 53 is wound and fixed to the pulley 52, and the other end extends downward and connects to the upper end of the magnet 41. By controlling the forward and reverse rotation of the motor 51 to retract and extend the pull rope 53, the magnet 41 can be raised and lowered.

[0029] To ensure the smooth and stable lifting and lowering of the magnet 41, and to reduce friction and collision noise between it and the inner wall of the magnetic retaining post 4, several raised strips 42 are provided on the inner wall of the magnetic retaining post 4 along its height direction. These raised strips 42 abut against the side of the magnet 41, changing the surface contact between the magnet 41 and the inner wall into a line contact, significantly reducing frictional resistance. Preferably, the cross-section of the raised strips 42 is arc-shaped to further reduce the contact area and friction.

[0030] In this embodiment, the control system mainly includes a central processing unit (CPU), a weighing module, a motor drive module, and a storage unit. The weighing module is connected to the weighing sensor 3, and the motor drive module is connected to the motor 51.

[0031] Its workflow is as follows: Initial state: Several steel plates are stacked on the loading plate 2. Under the action of the lifting structure 5, the magnet 41 is initially positioned at the upper end of the magnetic attraction limiting post 4 to avoid affecting the first loading.

[0032] Weight Detection and Height Estimation: Weighing sensor 3 detects the total weight of the current steel plate stack and transmits the signal to the weighing module of the control system. The central processing unit retrieves the pre-stored "standard weight of a single steel plate" data from the storage unit. By calculating the number of steel plates = total weight / standard weight of a single plate (rounded down), the number of steel plates in the current stack can be obtained. Subsequently, combined with the pre-stored "standard thickness of a single steel plate," the estimated height of the current stack is calculated: stack height = number of steel plates × standard thickness of a single plate.

[0033] Magnet positioning: Based on the calculated stacking height, the control system controls the motor 51 to operate, lowering the magnet 41 to a predetermined working height via the pulley 52 and the rope 53. This working height is typically set slightly below the top surface of the top layer of steel plates in the stack to ensure that the magnetic force of the magnet 41 can effectively act on the edges of the top and second layers of steel plates.

[0034] Magnetic Lift Angle and Gap Formation: After magnet 41 is in place, its strong magnetic force attracts the top few steel plates (mainly the top and second layers) to one side of the magnetically attracted limiting post 4. Because the steel plates themselves possess both elasticity and rigidity, the attracted side undergoes a slight, upward elastic bend. Although this initial lift is small, it is sufficient to create a tiny wedge-shaped gap between the top steel plate and the magnetically attracted second layer. This gap instantly disrupts the near-vacuum negative pressure state between the plates, originally created by the oil film and atmospheric pressure, allowing air to enter and greatly weakening the adsorption force generated by the oil film.

[0035] Separation and Pickup: When the vacuum suction cup (not shown in the figure) descends and picks up the top steel plate, the top steel plate has the largest curvature (because it has the least constraint due to the suction force of only one plate below it), while the second steel plate has a smaller curvature due to the stronger suction constraint from the lower layer. This "curvature difference" greatly reduces the contact area between the two plates, and the lifting force of the vacuum suction cup can easily overcome the weakened inter-plate suction force, thus achieving perfect separation and pickup of the top steel plate and effectively avoiding the problem of multiple steel plates being lifted up at the same time.

[0036] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A magnetically assisted feeding mechanism, characterized in that: include Base; The loading platform is connected to the base via a weighing sensor; At least one magnetic retaining post is provided on the side of the carrier plate; The magnetic limiting post is hollow inside and contains a magnet. The magnet moves up and down inside the magnetic limiting post through a lifting structure.

2. The magnetically assisted feeding mechanism according to claim 1, characterized in that: The lifting structure includes a motor, a pulley, and a pull rope. The pulley is controlled to rotate by the motor, and the pull rope is wound around the pulley and connected to the magnet.

3. The magnetically assisted feeding mechanism according to claim 2, characterized in that: The rope pulley is located inside the magnetic attraction limiting post, and the motor is located outside the magnetic attraction limiting post.

4. The magnetically assisted feeding mechanism according to claim 2, characterized in that: The inner wall of the magnetic limiting post is provided with several protrusions arranged along its height direction, and the protrusions abut against the magnet.

5. The magnetically assisted feeding mechanism according to claim 4, characterized in that: The cross-section of the protrusion is arc-shaped.

6. A magnetically assisted feeding mechanism according to any one of claims 1-5, characterized in that: The magnetic limiting post is located on the long side of the carrier plate.

7. A magnetically assisted feeding mechanism according to any one of claims 1-5, characterized in that: The other sides of the loading plate are provided with auxiliary limiting posts.

8. A magnetically assisted feeding mechanism according to any one of claims 1-5, characterized in that: The magnet is a neodymium magnet.

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