Flanging machine feeding online precision detection device and method

Abstract

The invention belongs to the technical field of flanging machine equipment, and particularly relates to a flanging machine feeding online precision detection device and method.The detection device comprises a detection mechanism and a lifting mechanism used for driving the detection mechanism to move up and down, and the detection mechanism comprises a fixed block and a movable block arranged on one side of the fixed block and used for making contact with a plate; the blocking head is connected with the panel and can horizontally move under the pushing of the panel, the sensor is connected with the blocking head and is used for detecting a displacement signal of the blocking head and feeding the displacement signal back to the control system, and the control system is used for compensating the feeding rotation of the panel according to the error of the displacement signal of the blocking head. Through the cooperative design of the lifting mechanism and the detection mechanism, online precision detection can be carried out on the plate, error data obtained through detection can be processed by a control system in real time, compensation rotation is carried out, the plate edge folding machining precision and machining efficiency are improved, and position interference cannot be caused to follow-up feeding.

Description

Technical Field

[0001] This invention belongs to the technical field of folding machine equipment, specifically relating to an online accuracy detection device and method for feeding folding machines. Background Technology

[0002] In the industrial production sector, sheet metal accounts for a very high proportion: in the automotive industry, sheet metal forming and processing accounts for about 60%; in the white goods industry, sheet metal processing accounts for about 80%; and in industries such as appliance cabinets, express delivery cabinets, kitchen cabinets, and filing cabinets, sheet metal processing accounts for more than 95%.

[0003] In recent years, CNC sheet metal processing equipment has been developing towards automation, intelligence, high speed and precision, and heavy-duty operation. In the sheet metal forming and processing industry, sheet bending is the most technically challenging process, and its overall technological level determines the overall technological level of the sheet metal processing field.

[0004] Currently, there are serious deficiencies in the precision detection during sheet metal processing, particularly when the sheet metal is rotated and then fed. Precision errors in the edges being processed during feeding affect processing accuracy, failing to meet the requirements for high-precision edge bending. This problem urgently needs to be addressed. Summary of the Invention

[0005] The purpose of this invention is to solve the problem of insufficient accuracy detection when feeding sheet metal after it has been rotated in the prior art, and to provide an online accuracy detection device and method for feeding sheet metal in a folding machine.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: an online precision detection device for feeding a folding machine, comprising a detection mechanism and a lifting mechanism for driving the detection mechanism to move up and down. The detection mechanism includes a fixed block, a stop head disposed on one side of the fixed block for contacting the sheet metal and capable of horizontal displacement under the push of the sheet metal, and a sensor connected to the stop head for detecting the stop head displacement signal and feeding the displacement signal back to the control system. The control system is used to compensate for the sheet metal feeding rotation based on the error of the stop head displacement signal.

[0007] Preferably, there are at least two sets of the detection mechanism and the lifting mechanism, which are symmetrically arranged on the left and right sides of the mounting base.

[0008] Preferably, the stop is mounted on one side of the fixed block by a hinge pin. One end of the hinge pin has a limiting protrusion, and the other end passes through a through hole on the fixed block and is connected to the stop. The hinge pin slides between itself and the through hole through an oil-free bushing.

[0009] Preferably, the stop and the fixing block are provided with a circular coil spring coaxially arranged with the hinge pin.

[0010] Preferably, the sensor is mounted on the fixed block by a bracket and contacts the side of the stop head closest to the fixed block.

[0011] Preferably, the lifting mechanism includes a cylinder disposed below the mounting base and capable of vertically extending and retracting. The output end of the cylinder passes through the mounting base via a vertically arranged guide rod and is connected to the bottom of the fixing block. The guide rod and the mounting base are slidably engaged by a linear bearing.

[0012] Preferably, at least two guide rods are provided symmetrically, and the end of the guide rod away from the fixed block is mounted on the connecting plate, which is connected to the output end of the cylinder through a floating joint.

[0013] A method for online accuracy detection of feeding in a bending machine, using the aforementioned online accuracy detection device for feeding in a bending machine, includes the following steps: S1. The inspection mechanism rises to the inspection position under the action of the lifting mechanism, and the two inspection mechanisms on both sides correspond to the two ends of the edge to be processed after the plate is rotated. S2. When the plate contacts the stop, the sensor detects the displacement signal of the stop and feeds it back to the control system; S3. The control system compensates for the rotation of the plate by using the error data obtained from the displacement signals of the two side stops. S4. The sensor acquires the compensated head displacement signal again and repeatedly judges the compensation until there is no error. S5. The inspection mechanism descends to the inspection position under the action of the lifting mechanism, and the board continues to be fed for high-precision edge bending processing.

[0014] After adopting the above technical solution, the online accuracy detection device and method for feeding a folding machine provided by the present invention has the following beneficial effects: 1) This invention can provide online precision detection function without changing the overall structure, and can perform online detection of the precision of the plate after rotation; 2) The error data obtained from the online accuracy detection of this invention can be processed in real time by the control system to perform compensatory rotation, thereby improving the accuracy and efficiency of sheet metal folding. 3) Through the coordinated design of the lifting mechanism and the detection mechanism, the present invention can flexibly switch the detection mechanism to the detection position or the position to be detected as needed. This design allows the detection mechanism to be lowered to the position to be detected after the detection is completed, thereby avoiding interference with normal feeding. Attached Figure Description

[0015] Figure 1 This is a structural cross-sectional view of an online accuracy detection device for feeding a folding machine according to the present invention; Figure 2This is a schematic diagram of the structure of an online precision detection device for feeding a folding machine according to the present invention; Figure 3 This is a front view of an online precision detection device for feeding a folding machine according to the present invention; Figure 4 This is a side view of an online precision detection device for feeding a folding machine according to the present invention; Figure 5 This is a schematic diagram of the installation structure of an online precision detection device for feeding a folding machine according to the present invention; Figure 6 This is a flowchart illustrating an online accuracy detection method for feeding a folding machine according to the present invention.

[0016] The components include: mounting base 1, cylinder 2, floating joint 3, connecting plate 4, guide rod 5, linear bearing 6, fixing block 7, stop head 8, hinge pin 9, round wire helical spring 10, oil-free bushing 11, sensor 12, and bracket 13. Detailed Implementation

[0017] The present invention will now be described in further clear and complete detail with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0019] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0020] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0021] For ease of description, spatial relative terms such as “above,” “over,” “on the upper surface of,” and “above” are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as “above” or “above” other devices or structures would subsequently be positioned as “below” or “under” other devices or structures. Thus, the exemplary term “above” can include both orientations of “above” and “below”. The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0022] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0023] like Figure 1-5As shown, the present invention provides an online precision detection device for feeding a folding machine, including a detection mechanism and a lifting mechanism for driving the detection mechanism to move up and down. By moving the detection mechanism up and down, the detection mechanism can be flexibly switched between the detection position and the position to be detected.

[0024] The detection mechanism and lifting mechanism are provided in at least two sets, symmetrically arranged on the left and right sides of the mounting base 1. The detection mechanism includes a fixed block 7, a stop head 8 disposed on one side of the fixed block 7 for contact with the plate and capable of horizontal displacement under the push of the plate, and a sensor 12 connected to the stop head 8 for detecting the displacement signal of the stop head 8 and feeding the displacement signal back to the control system. The control system is used to compensate for the plate feeding rotation based on the error of the displacement signal of the stop head 8. Specifically, the stop head 8 is disposed on one side of the fixed block 7 by a hinge pin 9. One end of the hinge pin 9 has a limiting protrusion, and the other end passes through a horizontally disposed through hole on the fixed block 7 and is connected to the stop head 8. The hinge pin 9 slides between itself and the through hole through an oil-free bushing 11. Furthermore, at least two hinge pins 9 are provided in parallel. A circular coil spring 10 is disposed coaxially with the hinge pin 9 between the stop head 8 and the fixed block 7. This spring 10 is used to generate compression deformation when the plate presses the stop head 8, thereby causing the stop head 8 to move horizontally. When the plate compression disappears, the spring 10 can rebound and drive the stop head 8 to reset.

[0025] The sensor 12 is mounted on the fixed block 7 via the bracket 13 and contacts the side of the stop 8 near the fixed block 7. The lifting mechanism includes a cylinder 2 located below the mounting base 1 and capable of vertical extension and retraction. The output end of the cylinder 2 passes through the mounting base 1 via a vertically arranged guide rod 5 and is connected to the bottom of the fixed block 7. The guide rod 5 and the mounting base 1 are slidably engaged via a linear bearing 6. Specifically, at least two guide rods 5 are symmetrically arranged, and the end of the guide rod 5 away from the fixed block 7 is mounted on a connecting plate 4. The connecting plate 4 is connected to the output end of the cylinder 2 via a floating joint 3.

[0026] like Figure 6 As shown, the present invention also provides a method for online accuracy detection of feeding in a folding machine, which uses the above-mentioned online accuracy detection device for feeding in a folding machine and includes the following steps: S1. The inspection mechanism rises to the inspection position under the action of the lifting mechanism, and the two inspection mechanisms on both sides correspond to the two ends of the edge to be processed after the plate is rotated. S2. When the plate contacts the stop, the sensor detects the displacement signal of the stop and feeds it back to the control system; S3. The control system compensates for the rotation of the plate by using the error data obtained from the displacement signals of the two side stops. S4. The sensor acquires the compensated head displacement signal again and repeatedly judges the compensation until there is no error. Specifically, if there is still an error in the displacement signal, the compensation continues; if there is no error, the detection ends. S5. After the inspection is completed, the inspection mechanism is lowered to the inspection position by the lifting mechanism, and the board continues to be fed for high-precision edge bending processing.

[0027] The present invention provides an online precision detection device and method for feeding a folding machine. Through the coordinated design of the lifting mechanism and the detection mechanism, the plate can be subjected to online precision detection. The error data obtained from the detection can be processed in real time by the control system to compensate for the rotation, thereby improving the folding accuracy and processing efficiency of the plate, and will not cause positional interference to subsequent feeding.

[0028] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An online precision detection device for feeding a folding machine, characterized in that: The system includes a detection mechanism and a lifting mechanism for driving the detection mechanism to move up and down. The detection mechanism includes a fixed block (7), a stop (8) disposed on one side of the fixed block (7) for contacting the plate and capable of horizontal displacement under the push of the plate, and a sensor (12) connected to the stop (8) for detecting the displacement signal of the stop (8) and feeding the displacement signal back to the control system. The control system is used to compensate for the plate feeding rotation based on the error of the displacement signal of the stop (8).

2. The online accuracy detection device for feeding a folding machine according to claim 1, characterized in that: The detection mechanism and the lifting mechanism are provided in at least two sets, which are symmetrically arranged on the left and right sides of the mounting base (1).

3. The online accuracy detection device for feeding a folding machine according to claim 1, characterized in that: The stop (8) is set on one side of the fixed block (7) by a hinge pin (9). One end of the hinge pin (9) has a limiting protrusion, and the other end passes through the through hole on the fixed block (7) and is connected to the stop (8). The hinge pin (9) slides between the through hole and the oil-free bushing (11).

4. The online accuracy detection device for feeding a folding machine according to claim 3, characterized in that: The stop (8) and the fixing block (7) are provided with a circular coil spring (10) coaxially arranged with the hinge pin (9).

5. The online accuracy detection device for feeding a folding machine according to claim 1, characterized in that: The sensor (12) is mounted on the fixed block (7) via a bracket (13) and is in contact with the side of the stop (8) near the fixed block (7).

6. The online accuracy detection device for feeding a folding machine according to claim 2, characterized in that: The lifting mechanism includes a cylinder (2) located below the mounting base (1) and capable of vertical extension and retraction along the vertical direction. The output end of the cylinder (2) passes through the mounting base (1) via a vertically arranged guide rod (5) and is connected to the bottom of the fixing block (7). The guide rod (5) and the mounting base (1) are slidably engaged by a linear bearing (6).

7. The online accuracy detection device for feeding a folding machine according to claim 6, characterized in that: At least two guide rods (5) are provided symmetrically, and the end of the guide rod (5) away from the fixed block (7) is installed on the connecting plate (4). The connecting plate (4) is connected to the output end of the cylinder (2) through the floating joint (3).

8. A method for online accuracy detection of feeding in a folding machine, characterized in that, The online accuracy detection device for feeding the folding machine according to any one of claims 1-7 includes the following steps: S1. The inspection mechanism rises to the inspection position under the action of the lifting mechanism, and the two inspection mechanisms on both sides correspond to the two ends of the edge to be processed after the plate is rotated. S2. When the plate contacts the stop, the sensor detects the displacement signal of the stop and feeds it back to the control system; S3. The control system compensates for the rotation of the plate by using the error data obtained from the displacement signals of the two side stops. S4. The sensor acquires the compensated head displacement signal again and repeatedly judges the compensation until there is no error. S5. The inspection mechanism descends to the inspection position under the action of the lifting mechanism, and the board continues to be fed for high-precision edge bending processing.

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