Automatic material returning and feeding device of bending machine

Abstract

The utility model discloses an automatic material returning and feeding device of a bending machine, which comprises a bending machine body on which an upper die and a lower die which correspond to each other are arranged, and is characterized in that the lower die comprises a fixed die and a movable die which are connected in a sliding manner, a first hydraulic cylinder is arranged on the bottom surface of the movable die and can drive the movable die to lift, and a second hydraulic cylinder is arranged on the bottom surface of the movable die. A material returning assembly is installed on the side, away from the movable mold, of the fixed mold, a feeding assembly is arranged on the side, away from the fixed mold, of the movable mold, lifting of the movable mold can be achieved through the fixed mold and the movable mold under the action of the first hydraulic cylinder, and therefore materials can be retreated from the lower mold under the action of the material returning assembly, and material returning is completed; the material returning assembly is arranged on one side of the movable mold, so that the pressure of the upper mold can be reduced, the service life of the material returning assembly is prolonged, stable operation of equipment is guaranteed, meanwhile, the feeding assembly on one side of the movable mold is arranged for automatic material conveying, manpower is effectively saved, and the machining efficiency of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to an automatic feeding and retracting device for a bending machine. Background Art

[0002] A bending machine is a machine capable of bending thin plates. Its structure mainly includes a bracket, a workbench, and a clamping plate. The workbench is placed on the bracket. The workbench is composed of a base and a pressing plate. The base is connected to the clamping plate through a hinge. The base is composed of a base shell, a coil, and a cover plate. The coil is placed in the depression of the base shell, and the cover plate covers the top of the depression. When in use, an electric current is applied to the coil through a wire. After the electric current is applied, an attractive force is generated on the pressing plate, thereby realizing the clamping of the thin plate between the pressing plate and the base. Due to the use of electromagnetic force clamping, the pressing plate can be made according to various workpiece requirements, and workpieces with side walls can be processed, and the operation is also very simple.

[0003] The prior art has the following technical problems: Chinese Patent CN218574663U provides an aluminum part bending machine with an auxiliary material retracting function. The upper die contacts the upper surface of the aluminum sheet, and then the upper die continues to move downward to close the V-shaped groove of the lower die, thereby realizing the bending of the aluminum sheet. During the deformation process of the aluminum sheet, the aluminum sheet will drive the top plate to move downward under the guidance of the sliding tube to compress the spring. When the bending is completed, the telescopic end of the hydraulic cylinder contracts to drive the upper die to move upward and reset. Then, the compressed spring will drive the top plate to move upward under the support of the bottom plate. Then, the top plate will eject the workpiece from the V-shaped groove of the lower die to realize the auxiliary material retracting of the workpiece. However, the pressure of the bending machine is generally relatively large, and the spring is prone to plastic deformation, which reduces the material retracting and ejecting function of the spring, and equipment failures are likely to occur after long-term use.

[0004] Therefore, we propose an automatic feeding and retracting device for a bending machine to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the shortcomings that the pressure of the existing bending machine is generally relatively large, the spring is prone to plastic deformation, which reduces the material retracting and ejecting function of the spring, and equipment failures are likely to occur after long-term use, and to provide an automatic feeding and retracting device for a bending machine.

[0006] The object of the present utility model is achieved by the following technical solutions: an automatic feeding and discharging device for a bending machine, including a bending machine body, on which a corresponding upper die and a lower die are installed. The characteristics are as follows: the lower die includes a fixed die and a movable die, the fixed die and the movable die are slidably connected, a first hydraulic cylinder is installed on the bottom surface of the movable die, and the first hydraulic cylinder can drive the movable die to lift and lower. A discharging component is installed on one side of the fixed die away from the movable die, and a feeding component is arranged on one side of the movable die away from the fixed die. The lifting and lowering of the movable die can be realized under the action of the first hydraulic cylinder through the fixed die and the movable die, so that the material can be discharged from the lower die under the action of the discharging component, thus completing the discharging. Setting the discharging component on one side of the movable die can reduce the pressure on the upper die, thereby prolonging the service life of the discharging component, ensuring the stable operation of the equipment. At the same time, setting the feeding component on one side of the movable die for automatic material transportation can effectively save manpower and improve the processing efficiency of the equipment.

[0007] A further technical solution is that the discharging component includes a second hydraulic cylinder and a ejector rod. The ejector rod is installed at the telescopic end of the second hydraulic cylinder, and the ejector rod extends into a through hole on the side wall of the lower die. By setting the second hydraulic cylinder and the ejector rod to cooperate to perform the ejecting operation on the bent material, the material taking is convenient and efficient.

[0008] A further technical solution is that a ejecting cover is installed at one end of the ejector rod away from the second hydraulic cylinder, and the ejecting cover is slidably connected with the inner wall of the through hole. By setting the ejecting cover to be slidably connected with the inner wall of the through hole, the stable operation of the ejecting cover and the ejector rod during movement can be ensured for the ejecting operation.

[0009] A further technical solution is that the second hydraulic cylinder is in a triangular prism shape. Setting the second hydraulic cylinder in a triangular prism structure can improve the strength of the second hydraulic cylinder, facilitate the ejection of heavier materials, and improve the strength of the discharging component.

[0010] A further technical solution is that a receiving cavity is arranged inside the feeding component, the height of the receiving cavity is lower than that of the lower die, and a conveyor belt is installed inside the receiving cavity. By setting the height of the receiving cavity to be lower than that of the lower die, the material can directly fall into the receiving cavity after being ejected, facilitating the automatic feeding of the material and improving the processing efficiency of the equipment.

[0011] A further technical solution is that pads are installed on the conveyor belt at equal distances.

[0012] A further technical solution is that the material of the pads is rubber. By setting the pads, the material falling into the receiving cavity can be protected to avoid being bruised during the material discharging.

[0013] The utility model has the following advantages: the utility model can realize the lifting of the moving die under the action of the first hydraulic cylinder through the fixed die and the moving die, so that the material can be withdrawn from the lower die under the action of the material withdrawal assembly, thus completing the material withdrawal. Setting the material withdrawal assembly on one side of the moving die can reduce the pressure on the upper die, thereby prolonging the service life of the material withdrawal assembly and ensuring the stable operation of the equipment. At the same time, a feeding assembly on one side of the moving die is set to automatically transport the material, effectively saving manpower and improving the processing efficiency of the equipment. By setting the height of the material receiving cavity lower than that of the lower die, the material can directly fall into the material receiving cavity after being ejected, facilitating the automatic feeding of the material and improving the processing efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic cross-sectional view of the overall structure of the utility model;

[0015] Figure 2 is the utility model Figure 1 an enlarged schematic view of the structure in;

[0016] Figure 3 is a schematic view of the ejector rod structure of the utility model; Figure 4 is a side view schematic of the feeding assembly of the utility model;

[0017] In the figure, 1, the bending machine body; 2, the upper die; 3, the lower die; 4, the fixed die; 5, the moving die; 6, the first hydraulic cylinder; 7, the feeding assembly; 701, the conveyor belt; 702, the backing plate; 8, the material withdrawal assembly; 801, the second hydraulic cylinder; 802, the ejector rod; 803, the ejector cover; 9, the through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and shown here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0020] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0021] It should be noted that like reference numerals and letters refer to like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the product of the present utility model is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] Such as Figures 1 to 4As shown in the figure, the automatic feeding and discharging device of a bending machine includes a bending machine body 1, and a corresponding upper die 2 and lower die 3 are installed on the bending machine body 1. It is characterized in that: the lower die 3 includes a fixed die 4 and a movable die 5, the fixed die 4 and the movable die 5 are slidably connected, a first hydraulic cylinder 6 is installed on the bottom surface of the movable die 5, and the first hydraulic cylinder 6 can drive the movable die 5 to lift and lower. A discharging assembly 8 is installed on one side of the fixed die 4 away from the movable die 5, and a feeding assembly 7 is arranged on one side of the movable die 5 away from the fixed die 4. The movable die 5 can be lifted and lowered under the action of the first hydraulic cylinder 6 through the fixed die 4 and the movable die 5, so that the material can be withdrawn from the lower die 3 under the action of the discharging assembly 8, thus completing the discharging. Setting the discharging assembly 8 on one side of the movable die 5 can reduce the pressure on the upper die 2, thereby prolonging the service life of the discharging assembly 8 and ensuring the stable operation of the equipment. At the same time, the feeding assembly 7 on one side of the movable die 5 is set to automatically transport the material, effectively saving manpower and improving the processing efficiency of the equipment. The discharging assembly 8 includes a second hydraulic cylinder 801 and a ejector rod 802. The ejector rod 802 is installed at the telescopic end of the second hydraulic cylinder 801, and the ejector rod 802 extends into a through hole 9 on the side wall of the lower die 3. By setting the second hydraulic cylinder 801 and the ejector rod 802 to cooperate to eject the bent material, the material taking is convenient and efficient. An ejector cover 803 is installed at one end of the ejector rod 802 away from the second hydraulic cylinder 801, and the ejector cover 803 is slidably connected with the inner wall of the through hole 9. By setting the ejector cover 803 to be slidably connected with the inner wall of the through hole 9, it can ensure the stable operation of the ejector cover 803 and the ejector rod 802 when moving for ejecting the material. The second hydraulic cylinder 801 is triangular. Setting the second hydraulic cylinder 801 to be of a triangular structure can improve the strength of the second hydraulic cylinder 801, facilitate ejecting heavier materials, and improve the strength of the discharging assembly 8. A receiving cavity is arranged in the feeding assembly 7, and the height of the receiving cavity is lower than that of the lower die 3. A conveyor belt 701 is installed in the receiving cavity. By setting the height of the receiving cavity to be lower than that of the lower die 3, the material can directly fall into the receiving cavity after being ejected, facilitating the automatic feeding of the material and improving the processing efficiency of the equipment. Equal-distance arranged cushion plates 702 are installed on the conveyor belt 701, and the material of the cushion plates 702 is rubber material. By setting the cushion plates 702, the material falling into the receiving cavity can be protected to avoid being bruised due to the material falling.

[0025] The working process of the present utility model is as follows: During the use of this device, first, the material is bent under the action of the upper die 2 and the lower die 3. After the bending process is completed, the upper die 2 rises under the external press. At this time, the first hydraulic cylinder 6 drives the movable die 5 to descend. Then, the second hydraulic cylinder 801 pushes the ejector rod 802 and the ejector cover 803 to eject the material in the lower die 3 for discharging, so that the material falls into the receiving cavity in the feeding assembly 7. At the same time, the cushion plate 702 in the feeding assembly 7 can buffer the falling material, and the conveyor belt 701 takes away the material on the cushion plate 702. Finally, the first hydraulic cylinder 6 drives the movable die 5 to reset for the next round of bending operation.

[0026] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Automatic feeding device for a bending machine, comprising a bending machine body (1), on which a corresponding upper die (2) and a lower die (3) are installed, characterized in that: The lower die (3) includes a fixed die (4) and a movable die (5). The fixed die (4) and the movable die (5) are slidably connected. A first hydraulic cylinder (6) is installed on the bottom surface of the movable die (5). The first hydraulic cylinder (6) can drive the movable die (5) to move up and down. A material discharging assembly (8) is installed on one side of the fixed die (4) away from the movable die (5). A material feeding assembly (7) is arranged on one side of the movable die (5) away from the fixed die (4).

2. The automatic feeding and retracting device for a bending machine according to claim 1, wherein: The material discharging assembly (8) includes a second hydraulic cylinder (801) and a ejector rod (802). The ejector rod (802) is installed at the telescopic end of the second hydraulic cylinder (801). The ejector rod (802) extends into a through hole (9) on the side wall of the lower die (3).

3. The automatic feeding and retracting device for a bending machine according to claim 2, wherein: An ejector cover (803) is installed at one end of the ejector rod (802) away from the second hydraulic cylinder (801). The ejector cover (803) is slidably connected to the inner wall of the through hole (9).

4. The automatic feeding and retracting device for a bending machine according to claim 2, characterized in that: The second hydraulic cylinder (801) is triangular prism-shaped.

5. The automatic feeding and retracting device for a bending machine according to claim 1, characterized in that: A material receiving cavity is arranged in the material feeding assembly (7). The height of the material receiving cavity is lower than that of the lower die (3). A conveyor belt (701) is installed in the material receiving cavity.

6. The automatic feeding and retracting device for a bending machine according to claim 5, wherein: Equal-distance arranged cushion plates (702) are installed on the conveyor belt (701).

7. The automatic feeding and retracting device for a bending machine according to claim 6, characterized in that: The cushion plate (702) is made of rubber material.

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