Auxiliary equipment for loading and unloading of bending machine and auxiliary method for processing precision parts

Abstract

The present invention relates to the technical field of automatic loading and unloading of bending machines, and specifically to an auxiliary loading and unloading equipment for bending machines and an auxiliary method for processing precision parts. A feeding device is provided with a storage bin in a vertical state, and a discharge port is provided at the top of the storage bin; a plurality of supporting mechanisms for supporting workpieces to be bent from bottom to top are equidistantly provided in the storage bin along the vertical direction, and a bin position that can only accommodate one workpiece to be bent is formed between two adjacent supporting mechanisms, and each supporting mechanism has at least a supporting claw group composed of two supporting claws, and the states of all supporting claws include a working position and an avoidance position. When the workpiece to be bent moves upward from below the supporting claw to above the supporting claw, the present invention installs a plurality of supporting claws in the bin, and a bin position that can only accommodate one workpiece to be bent is formed between each two adjacent supporting claws, so as to avoid the workpieces to be bent from being stacked on each other and the two sides of the bent workpiece from being bent.

Description

Technical Field

[0001] The invention relates to the technical field of automatic loading and unloading of bending machines, and in particular to auxiliary equipment for loading and unloading of bending machines and an auxiliary method for processing precision parts. Background Art

[0002] In the metal processing industry, bending machines are important metal sheet forming equipment. When bending some products in batches, workers are required to put the products on the bending machines one by one. This method is inefficient and affects the processing of products.

[0003] The Chinese patent CN216632368U discloses an adjustable material bin on the bending line of microwave oven plates, including a mounting frame, a bottom plate, a side frame and a feeding plate, the bottom plate is fixed on the mounting frame through a support block, the two side frames are arranged on the bottom plate at intervals, the feeding plate is slidably connected with the side frames, and also includes an adjustment mechanism, the adjustment mechanism is located between the two side frames, the adjustment mechanism includes a width adjustment rod, a length adjustment rod, a width adjustment assembly and a length adjustment assembly, the width adjustment assembly and the length adjustment assembly are arranged on the mounting frame and located below the bottom plate; the width adjustment rod is vertically arranged on the width adjustment assembly, the length adjustment rod is vertically arranged on the length adjustment assembly, the width adjustment rod and the length adjustment rod are movable on the feeding plate and the bottom plate, and the width adjustment rod and the length adjustment rod can be driven by the width adjustment assembly and the length adjustment assembly to move synchronously in different directions forward and backward and left and right, respectively, so as to adapt to the storage of plates of different sizes. This technical solution is suitable for storing rough sheets, or parts that remain flat after being processed in the previous process. If the parts are irregular in shape or uneven in overall shape after the previous process, the adjustable silo cannot cooperate with the automatic material handling robot to complete the loading operation. That is, due to the irregular shape of the parts, it is impossible to ensure that the posture of each part in the adjustable silo is unique.

[0004] Based on the above problems, the present application aims to propose a loading and unloading auxiliary equipment for bending processing, so as to meet the automatic loading and unloading operations for parts with irregular shapes and realize the unmanned and automated bending center. Summary of the invention

[0005] The purpose of the present invention is to provide an auxiliary device for loading and unloading materials of a bending machine and an auxiliary method for processing precision parts. By installing a plurality of material supporting claws in a material bin, a bin that can only accommodate one workpiece to be bent is formed between each two adjacent material supporting claws. This can ensure that the posture of each workpiece to be bent in the feeding device is unique, which is convenient for the handling robot to automatically pick up the material.

[0006] In order to solve the problems of the prior art, the present invention provides a bending machine loading and unloading auxiliary equipment, comprising: a feeding device for storing a plurality of workpieces to be bent; a handling robot for grabbing the workpieces to be bent one by one from the feeding device; a bending platform, which is arranged in front of the bending machine and has a fixture for carrying the workpieces to be bent; a material unloading conveyor for conveying the bent workpieces to the next processing station; the feeding device is provided with a vertical storage bin, and a discharge port is provided at the top of the storage bin; a plurality of support mechanisms for supporting the workpieces to be bent from bottom to top are equidistantly arranged in the storage bin along the vertical direction, and two adjacent support mechanisms are provided at the same distance from each other. A storage position that can only accommodate one workpiece to be bent is formed between the mechanisms, and each supporting mechanism has at least a supporting claw group consisting of two supporting claws. The states of all supporting claws include a working position and an avoidance position. When the workpiece to be bent moves upward from below the supporting claws to above the supporting claws, the supporting claws change from the working position to the avoidance position. When the workpiece to be bent is completely above the supporting claws, the supporting claws return to the working position and support the workpiece to be bent; the feeding device is also provided with a lifting mechanism for lifting the workpiece to be bent in the storage bin to the discharge port position; the feeding device is also provided with an openable bin door.

[0007] Preferably, the material storage bin is provided with a first driver for driving the material supporting claw to switch positions between a working position and an avoidance position.

[0008] Preferably, the material storage bin is provided with a first avoidance linkage mechanism for switching the position of the material supporting claw between the working position and the avoidance position.

[0009] Preferably, the lifting mechanism has at least a lifting claw group consisting of two lifting claws, and the states of all lifting claws include a working position and an avoidance position. When the lifting claw moves upward to lift the workpiece to be bent, the lifting claw is in the working position; when the lifting claw moves downward from above the workpiece to be bent to below the workpiece to be bent, the lifting claw changes from the working position to the avoidance position.

[0010] Preferably, the lifting mechanism is provided with a second driver for driving all the lifting claws in the lifting claw group to synchronously switch positions between the working position and the avoidance position.

[0011] Preferably, the lifting mechanism is provided with a second avoidance linkage mechanism for switching the position of each lifting claw between the working position and the avoidance position.

[0012] Preferably, the lifting mechanism is provided with a plurality of lifting claw groups, each lifting claw group is composed of at least two lifting claws, and the states of all lifting claws include a working position and an avoidance position. When the lifting claw moves upward to lift the workpiece to be bent, the lifting claw is in the working position; when the lifting claw moves downward from above the workpiece to be bent to below the workpiece to be bent, the lifting claw changes from the working position to the avoidance position.

[0013] Preferably, the lifting mechanism further comprises two lifting belts, the two lifting claws in each lifting claw group are respectively mounted on one lifting belt, and all the lifting claws on each lifting device are equidistantly arranged along the circumference of the lifting belt.

[0014] Preferably, the lifting claw is fixedly arranged on the lifting belt, or the lifting claw can be rotatably connected to the lifting belt around a horizontal axis, or can be movably connected along a belt surface perpendicular to the lifting belt.

[0015] An auxiliary method for machining precision parts, including a bending machine loading and unloading auxiliary device in the above scheme, comprises the following steps:

[0016] S1: The staff opens the door on the storage bin, inserts the workpiece to be bent into the material supporting claws in the storage bin, and then closes the door of the storage bin.

[0017] S2: The workpiece to be bent located at the discharge port of the storage bin is picked up by the handling robot, and the workpiece to be bent is placed on the fixture on the bending platform. The bending platform feeds the workpiece to be bent to the upper knife or lower knife of the bending machine for bending through the internal feeding mechanism. When the bending is completed, the bending platform takes out the workpiece to be bent through the feeding mechanism, and then the handling robot puts the bent workpiece on the unloading conveyor, and the unloading conveyor transfers the bent workpiece to the next processing station.

[0018] S3: When the top workpiece to be bent is taken out, the next workpiece to be bent is brought into contact with the workpiece to be bent by the lifting mechanism, and the supporting claws on the storage bin form an avoidance space for the workpiece to be bent to pass through, so as to prepare for the next loading.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The present invention installs a plurality of material-carrying claws in the material bin, and forms a bin space between each two adjacent material-carrying claws that can accommodate only one workpiece to be bent. This ensures that the posture of each workpiece to be bent in the feeding device is unique, making it easier for the handling robot to automatically pick up the material.

[0021] (2) The present invention adopts a material supporting claw. After the previous workpiece to be bent is taken out, the workpiece to be bent moves upward from below the material supporting claw to above the material supporting claw. During the process, the material supporting claw changes from the working position to the avoiding position, which can facilitate the upward movement of the lower workpiece to be bent, realize the orderly storage and efficient circulation of the workpiece to be bent, and ensure that the workpiece can quickly reach the front of the bending machine for processing when needed, thereby optimizing the material management process and improving the overall production efficiency. The automated operation of the material supporting claw reduces manual intervention and heavy labor, and reduces the labor intensity of workers.

[0022] (3) By setting up a lifting mechanism, when the previous workpiece to be bent is taken out, the next workpiece to be bent is lifted up by the lifting mechanism, so that the device can continuously move the workpiece to be bent upward, realizing the function of continuous loading. The seamless connection between the automatic loading and unloading system and the bending machine optimizes the material flow link in the production process, reduces waiting time and material handling times, and improves the overall production efficiency. At the same time, this smooth production process also helps to reduce waste and loss in the production process, improve resource utilization, not only improve the automation level of the equipment, but also enhance the overall stability and reliability of the equipment, and reduce the failure rate and maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional structure diagram of a bending machine loading and unloading auxiliary equipment of the present invention Figure 1 .

[0024] Figure 2 This is a three-dimensional structure diagram of a bending machine loading and unloading auxiliary equipment of the present invention Figure 2 .

[0025] Figure 3 This is a three-dimensional structure diagram of a bending machine loading and unloading auxiliary equipment of the present invention Figure 3 .

[0026] Figure 4 It is a three-dimensional structural schematic diagram of a feeding device in a bending machine loading and unloading auxiliary equipment of the present invention.

[0027] Figure 5 It is a three-dimensional partial cross-sectional structural schematic diagram of a feeding device in a bending machine loading and unloading auxiliary equipment of the present invention.

[0028] Figure 6 yes Figure 4 Schematic diagram of the cross-sectional structure along the AA plane.

[0029] Figure 7 yes Figure 4 Schematic diagram of the cross-sectional structure along the BB surface.

[0030] Figure 8 It is a schematic diagram of a first specific embodiment of a bending machine loading and unloading auxiliary device of the present invention, in which a first driver drives a material supporting claw to rotate from a working position to an avoidance position.

[0031] Fig. 9 It is a schematic diagram of the first specific embodiment of the present invention in which a material supporting claw in a bending machine loading and unloading auxiliary device rotates from a working position to an avoidance position under the action of a first avoidance linkage mechanism.

[0032] Fig.10It is a schematic diagram of a lifting mechanism in a bending machine loading and unloading auxiliary device of the present invention having a lifting claw group.

[0033] Fig.11 It is a schematic diagram of a lifting mechanism in a bending machine loading and unloading auxiliary device of the present invention having multiple lifting claw groups.

[0034] The numbers in the figure are: 100, workpiece to be bent; 200, bending machine; 300, feeding device; 301, discharge port; 302, storage bin; 303, supporting mechanism; 303a, supporting claw; 303a1, first rotating axis; 303b, first torsion spring; 304, lifting mechanism; 304a, lifting claw group; 304b; lifting claw; 400, handling robot; 401, material picker; 500, bending platform; 501, fixture; 600, unloading conveyor. DETAILED DESCRIPTION

[0035] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] Reference Figure 1-Figure 3 As shown, the present invention provides a loading and unloading auxiliary equipment for a bending machine 200, including a feeding device 300, a handling robot 400, a bending platform 500 and a material unloading conveyor 600. The feeding device 300 is used to store a plurality of workpieces 100 to be bent; the handling robot 400 is used to grab the workpieces 100 to be bent one by one from the feeding device 300; usually, a mechanical arm and a suction cup and other devices are used to select a suitable grabbing method according to the shape and material of the workpiece. The handling robot 400 is driven by a high-precision servo motor or a stepper motor to achieve multi-axis linkage to ensure accurate positioning and rapid response during the handling process. The bending platform 500 is arranged in front of the bending machine 200, and has a fixture 501 for carrying the workpiece 100 to be bent; the fixture 501 can be customized according to the shape of the workpiece and the bending requirements, and the workpiece is fixed by means of positioning pins and the like to prevent displacement during the bending process. The unloading conveyor 600 is used to convey the bent workpiece to the next processing station; the unloading conveyor 600 is a main transmission component and is driven by a motor to achieve continuous or intermittent conveying.

[0037] See also Figure 4 and Figure 5As shown, the feeding device 300 is provided with a storage bin in a vertical state, and a discharge port 301 is provided on the top of the storage bin. Several supporting mechanisms 303 are equidistantly arranged in the vertical direction in the storage bin to support the workpiece 100 to be bent from bottom to top, and a bin 302 that can only accommodate one workpiece 100 to be bent is formed between two adjacent supporting mechanisms 303. Each supporting mechanism 303 has at least a supporting claw 303a group consisting of two supporting claws 303a, and the states of all supporting claws 303a include a working position and an avoidance position. When the workpiece 100 to be bent moves upward from the bottom of the supporting claw 303a to the top of the supporting claw 303a, the supporting claw 303a changes from the working position to the avoidance position. When the workpiece 100 to be bent is completely above the supporting claw 303a, the supporting claw 303a returns to the working position and supports the workpiece 100 to be bent. Figure 5 The middle material supporting claw 303a is in the working position. Figure 5 and Figure 7 As shown, the feeding device 300 is also provided with a lifting mechanism 304 for lifting the workpiece 100 to be bent in the storage bin to the position of the discharge port 301; the feeding device 300 is also provided with an openable bin door (not shown in the figure), and the lifting mechanism 304 is specifically configured as a left lifting part and a right lifting part, wherein a supporting mechanism 303 of one of the lifting parts is installed on the bin door, and the bin door is hinged on the storage bin, when it is necessary to place the workpiece 100 to be bent on the supporting claw 303a of the supporting mechanism 303 in the storage bin, the bin door is opened, and the workpiece 100 to be bent is placed in the bin position 302 to be supported by the supporting mechanism 303.

[0038] The material storage bin is provided with a first driver for driving the material supporting claw 303a to switch between the working position and the avoidance position.

[0039] As a first specific embodiment of the first driver, Figure 8 As shown, the material supporting claw 303a has a first rotating axis 303a1 in a horizontal state. The material supporting claw 303a rotates around the first rotating axis 303a1 toward the discharge port 301 to switch from the working position to the avoidance position. The first driver is a rotary driver, which can accurately control the rotation angle and speed of the material supporting claw 303a to ensure that the material supporting claw 303a can accurately stay in the working position or the avoidance position.

[0040] When the workpiece 100 to be bent moves upward and approaches the material supporting claw 303a, the first driver drives the material supporting claw 303a to rotate around the first rotating axis 303a1 toward the discharge port 301 to avoid the workpiece 100 to be bent from below. The first driver is a rotary driver, which can be a motor or other driver of a mechanism that can serve as a rotating function. When the workpiece 100 to be bent moves upward from the bottom of the material supporting claw 303a to the top of the material supporting claw 303a, the material supporting claw 303a changes from the working position to the avoiding position. When the workpiece 100 to be bent is completely above the material supporting claw 303a, the first driver drives the material supporting claw 303a to return to the working position and support the workpiece 100 to be bent.

[0041] As a second specific embodiment of the first driver, the first driver is a linear driver, which drives the material supporting claw 303a to move in the horizontal direction, which means that the material supporting claw 303a no longer rotates around a certain rotation axis, but directly slides or translates along a straight line trajectory. To be more specific, when the first driver is a linear driver, the working position of the material supporting claw 303a can be understood as the first driver driving the material supporting claw 303a to move forward and extend into the material storage bin, and the avoidance position of the material supporting claw 303a can be understood as the first driver driving the material supporting claw 303a to move backward and exit the material storage bin.

[0042] In the process of the workpiece 100 to be bent moving upward from the bottom of the material supporting claw 303a to the top of the material supporting claw 303a, the linear drive drives the material supporting claw 303a to withdraw from the storage bin, that is, switches from the working position to the avoidance position, so that the workpiece 100 to be bent moves upward. The linear drive can use a cylinder or an electric cylinder, or other linear motion mechanism.

[0043] The first driver for driving the material-carrying claw 303a to switch between the working position and the avoidance position can be understood as an active switching mechanism, that is, an independent driving mechanism controls the state of the material-carrying claw 303a according to the actual working conditions. The present invention also provides a passive switching mechanism for switching the material-carrying claw 303a between the working position and the avoidance position. That is, the material storage bin is provided with a first avoidance linkage mechanism for switching the material-carrying claw 303a between the working position and the avoidance position.

[0044] As a first specific embodiment of the first avoidance linkage mechanism, Fig. 9As shown, the first avoidance linkage mechanism includes a first rotating shaft 303a1 and a first torsion spring 303b arranged on the material supporting claw 303a. The first torsion spring 303b is an element that works by utilizing elastic potential energy. When deformed by an external force, it stores energy and releases the energy after the external force disappears, thereby restoring the material supporting claw 303a to its original state. The first rotating shaft 303a1 is arranged in a horizontal state, and the material supporting claw 303a rotates around the first rotating shaft 303a1 toward the discharge port 301 to achieve switching from the working position to the avoidance position.

[0045] When the material supporting claw 303a moves upward from the bottom of the material supporting claw 303a to the top of the material supporting claw 303a, the workpiece 100 to be bent will contact the lower part of the material supporting claw 303a, and the first rotating axis 303a1 of the material supporting claw 303a drives the material supporting claw 303a to move around the first rotating axis 303a1 to achieve avoidance, and the workpiece 100 to be bent moves upward to separate from the material supporting claw 303a, the material supporting claw 303a is reset to the working position under the action of the first torsion spring, and the workpiece 100 to be bent can support the workpiece 100 to be bent from bottom to top.

[0046] As a second specific embodiment of the first avoidance linkage mechanism, the first avoidance linkage mechanism includes a first slide groove and a first compression spring arranged in the first slide groove, the material support claw 303a is slidably arranged in the first slide groove and connected to the first compression spring, the first compression spring is a component that works by elastic potential energy, when compressed by an external force, it will store energy and release energy after the external force disappears, so that the material support claw 303a returns to its original state. The lower front end of the material support claw 303a is provided with a guide inclined surface that can contact the edge of the workpiece 100 to be bent. When there is no external force acting on the material support claw 303a, the material support claw 303a is ejected from the first slide groove under the elastic force of the first compression spring, and the material support claw 303a is in the working position. When the workpiece 100 to be bent moves upward, its edge contacts the guide inclined surface of the material support claw 303a, and under the action of the horizontal component force, the material support claw 303a overcomes the elastic force of the first compression spring and moves into the first slide groove, that is, moves from the working position to the avoidance position.

[0047] As a first specific embodiment of the lifting mechanism 304, Figure 7 and Fig.10As shown, the lifting mechanism 304 has at least a lifting claw group 304a composed of two lifting claws 304b, and the states of all lifting claws 304b include working position and avoiding position. When the lifting claw 304b moves upward to lift the workpiece 100 to be bent, the lifting claw 304b is in the working position; when the lifting claw 304b moves downward from the upper part of the workpiece 100 to be bent to the lower part of the workpiece 100 to be bent, the lifting claw 304b changes from the working position to the avoiding position. When only one lifting claw group 304a is used, the lifting mechanism 304 lifts the top workpiece 100 to be bent in the storage bin upward to the discharge port 301 each time. That is, the lifting claw group 304a needs to reciprocate in the vertical direction. Specifically, the lifting mechanism 304 also includes two lifting belts. The two lifting claws 304b in a lifting claw group 304a are respectively installed on a lifting bar. The two lifting bars move synchronously to realize the synchronous reciprocating movement of the two lifting claws 304b in a lifting claw group 304a in the vertical direction. The lifting belt can be a belt, or it can be replaced by a transmission chain.

[0048] The lifting mechanism 304 is provided with a second driver for driving all the lifting claws 304b in the lifting claw group 304a to synchronously switch positions between the working position and the avoidance position.

[0049] The lifting claw 304b has a second rotating shaft in a horizontal state. The lifting claw 304b rotates around the second rotating shaft toward the discharge port 301 to switch from the working position to the avoidance position. The second driver is a rotating driver.

[0050] The second driver is a linear driver, which drives the lifting claw 304b to move in a horizontal direction.

[0051] The lifting mechanism 304 is provided with a second avoidance linkage mechanism for switching the position of each lifting claw 304b between the working position and the avoidance position.

[0052] The second avoidance linkage mechanism includes a second rotating shaft and a second torsion spring arranged on the lifting claw 304b. The second rotating shaft is arranged in a horizontal state. The lifting claw 304b rotates around the second rotating shaft toward the discharge port 301 to switch from the working position to the avoidance position.

[0053] The second avoidance linkage mechanism includes a second slide groove and a second compression spring arranged in the second slide groove. The lifting claw 304b is slidably arranged in the second slide groove and connected to the second compression spring. The lower front end of the lifting claw 304b is provided with a guiding inclined surface that can contact the edge of the workpiece 100 to be bent.

[0054] As a second specific embodiment of the lifting mechanism 304, Fig.11As shown, the lifting mechanism 304 is provided with a plurality of lifting claw groups 304a, each lifting claw group 304a is composed of at least two lifting claws 304b, and the states of all lifting claws 304b include a working position and an avoidance position. When the lifting claw 304b moves upward to lift the workpiece 100 to be bent, the lifting claw 304b is in the working position; when the lifting claw 304b moves downward from the upper part of the workpiece 100 to be bent to the lower part of the workpiece 100 to be bent, the lifting claw 304b changes from the working position to the avoidance position. Bend workpiece 100 lifting claw 304b of workpiece 100 to be bent lifting claw 304b of workpiece 100 to be bent lifting claw 304b of workpiece 100 to be bent lifting claw 304b of workpiece 100 to be bent lifting mechanism 304 of workpiece 100 to be bent lifting mechanism 304 lifting claw group 304a lifting claw group 304a lifting claw 304b lifting claw 304b lifting claw 304b lifting claw 304b lifting claw 304b lifting claw 304b lifting claw 304b lifting claw 304b lifting claw 304b lifting claw 304b lifting claw 304b lifting claw 304b lifting claw 304b lifting claw 304b lifting claw 304b of workpiece 100 to be bent. The lifting mechanism 304 also includes two lifting belts, two lifting claws 304b in each lifting claw group 304a are respectively installed on a lifting belt, all lifting claws 304b on each lifting belt are equidistantly arranged along the circumference of the lifting belt, and the lifting claws 304b are fixedly arranged on the lifting belt. In the embodiment where the lifting claws 304b are equidistantly arranged along the axial direction of the belt body of the lifting belt to form multiple lifting claw groups 304a, all the bent workpieces in the storage bin are lifted during each lifting process to lift the top workpiece 100 to be bent to the discharge port 301.

[0055] The lifting claw 304b can be connected to the lifting belt rotatably around a horizontal axis, or can be connected movably along a belt surface perpendicular to the lifting belt. The lifting mechanism 304 is provided with a third driver for driving all the lifting claws 304b in all the lifting claw groups 304a to switch positions between the working position and the avoidance position synchronously. The lifting mechanism 304 is provided with a third avoidance linkage mechanism for each lifting claw 304b to switch positions between the working position and the avoidance position.

[0056] like Figure 3 As shown, the transport robot 400 has a picker 401 for picking up the workpiece 100 to be bent from the discharge port 301 of the feeding device 300 .

[0057] like Figure 2 and Figure 3As shown, the bending platform 500 is provided with a feeding mechanism for driving the jig 501 to feed in the direction of the bending machine 200. The feeding mechanism can be a combination of a linear motion mechanism and a lifting motion mechanism, and is used to drive the jig 501 thereon to move the workpiece 100 to be bent to the bending machine 200 for bending. The linear motion mechanism can adopt a linear module or a ball screw transmission mechanism, or a hydraulic transmission mechanism, or a cylinder. As long as the structure can realize the linear motion function, it can be applicable. The lifting motion can also adopt a linear module or a ball screw transmission mechanism. As long as the structure can realize the lifting motion, it can be applicable.

[0058] An auxiliary method for precision parts processing includes a bending machine 200 loading and unloading auxiliary device in the above scheme, and the operating steps are as follows:

[0059] S1: The staff opens the door of the storage bin, inserts the workpiece 100 to be bent into the material supporting claw 303a in the storage bin, and then closes the door of the storage bin.

[0060] S2: The workpiece 100 to be bent located at the discharge port 301 of the storage bin is picked up by the handling robot 400, and the workpiece 100 to be bent is placed on the jig 501 on the bending platform 500. The bending platform 500 feeds the workpiece 100 to be bent to the upper knife or lower knife of the bending machine 200 for bending through the internal feeding mechanism. When the bending is completed, the bending platform 500 takes out the workpiece 100 to be bent through the feeding mechanism, and then places the bent workpiece on the unloading conveyor 600 through the handling robot 400, and the unloading conveyor 600 transfers the bent workpiece to the next processing station.

[0061] S3: After the top workpiece 100 to be bent is taken out, the next workpiece 100 to be bent is brought into contact with the workpiece 100 to be bent by the lifting mechanism 304, and the material supporting claw 303a on the material storage bin forms an avoidance space for the workpiece 100 to be bent to pass through, in preparation for the next loading.

[0062] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A bending machine loading and unloading auxiliary equipment, comprising: A feeding device for storing a plurality of workpieces to be bent; A handling robot is used to grab the workpieces to be bent one by one from the feeding device; The bending platform is arranged in front of the bending machine and has a fixture for carrying the workpiece to be bent; Unloading conveyor, used to transport the bent workpiece to the next processing station; The feeding device is provided with a vertical storage bin, and a discharge port is provided at the top of the storage bin; A plurality of supporting mechanisms for supporting the workpiece to be bent from bottom to top are equidistantly arranged in the material storage bin along the vertical direction, and a bin that can only accommodate one workpiece to be bent is formed between two adjacent supporting mechanisms. Each supporting mechanism has at least a supporting claw group consisting of two supporting claws, and the states of all supporting claws include a working position and an avoidance position. When the workpiece to be bent moves upward from below the supporting claw to above the supporting claw, the supporting claw changes from the working position to the avoidance position. When the workpiece to be bent is completely above the supporting claw, the supporting claw returns to the working position and supports the workpiece to be bent. The feeding device is also provided with a lifting mechanism for lifting the workpiece to be bent in the storage bin upward to the discharge port position; The feeding device is also provided with an openable bin door; The material storage bin is provided with a first driver for driving the material supporting claw to switch between the working position and the avoidance position; The first driver is a linear driver, which drives the material-carrying claw to move in a horizontal direction, and the material-carrying claw slides or translates along a linear trajectory. The working position of the material-carrying claw is that the first driver drives the material-carrying claw to move forward and extend into the material storage bin, and the avoidance position of the material-carrying claw is that the first driver drives the material-carrying claw to move backward and exit the material storage bin; In the process of the workpiece to be bent moving upward from the bottom of the material-carrying claw to the top of the material-carrying claw, the linear drive drives the material-carrying claw to withdraw from the storage bin, that is, switches from the working position to the avoidance position, so that the workpiece to be bent moves upward. The linear drive adopts a cylinder or an electric cylinder; The lifting mechanism has at least a lifting claw group consisting of two lifting claws, and the states of all lifting claws include a working position and an avoidance position. When the lifting claw moves upward to lift the workpiece to be bent, the lifting claw is in the working position; when the lifting claw moves downward from above the workpiece to be bent to below the workpiece to be bent, the lifting claw changes from the working position to the avoidance position; The lifting mechanism is provided with a second driver for driving all lifting claws in the lifting claw group to synchronously switch positions between the working position and the avoidance position; The second driver is a linear driver, which drives the lifting claw to move in a horizontal direction; A material support mechanism with material support claws and a lifting mechanism with lifting claws are provided in the material storage bin at the same time. The material support claws are arranged opposite to each other, and the lifting claws are arranged opposite to each other. Each row of material support claws is arranged adjacent to each row of lifting claws. Features: The cross-section of the workpiece to be bent is rectangular, and a supporting mechanism and a lifting mechanism are arranged on the outside of the workpiece to be bent. The supporting mechanism is arranged on the opposite side of the outer edge of the workpiece to be bent, and the lifting mechanism is arranged on the opposite side of the outer edge of the workpiece to be bent, and the lifting mechanism is arranged adjacent to the supporting mechanism.

2. An auxiliary method for precision parts processing, using the auxiliary equipment for loading and unloading a bending machine as claimed in claim 1, characterized in that: The steps include: S1: The staff opens the door on the storage bin, inserts the workpiece to be bent into the material claw in the storage bin, and then closes the door of the storage bin; S2: The workpiece to be bent at the outlet of the storage bin is picked up by the handling robot, and the workpiece to be bent is placed on the fixture on the bending platform. The bending platform feeds the workpiece to be bent to the upper knife or lower knife of the bending machine through the internal feeding mechanism for bending. When the bending is completed, the bending platform takes out the workpiece to be bent through the feeding mechanism, and then the handling robot puts the bent workpiece on the unloading conveyor, and the unloading conveyor transfers the bent workpiece to the next processing station; S3: When the top workpiece to be bent is taken out, the next workpiece to be bent is brought into contact with the workpiece to be bent by the lifting mechanism, and the material claws on the storage bin form an avoidance space for the workpiece to be bent to pass through, so as to prepare for the next loading.

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