Automatic water blowing device used before paint spraying of shaft type long workpieces and using method of automatic water blowing device

Abstract

The invention relates to the technical field of production automation, in particular to an automatic water blowing device for shaft type long workpieces before paint spraying and a using method thereof.The device comprises a conveying mechanism, a detecting mechanism and a water blowing mechanism, and the conveying mechanism is detachably connected with the workpieces and used for driving the workpieces to move; the detection mechanism is arranged adjacent to the conveying mechanism and is used for detecting the length size of the workpiece; and the water blowing mechanism is adjacent to the conveying mechanism, is arranged at the rear end of the detection mechanism, and is used for configuring a water blowing range according to the length size of the workpiece and blowing compressed gas to the workpiece according to the water blowing range. The water blowing range is adjusted by automatically detecting the length size of the workpiece, water blowing operation matched with the size of the workpiece is automatically achieved, the automatic water blowing device is suitable for workpieces of various sizes, and the problems that manual water blowing is large in noise and labor intensity, low in efficiency and high in cost are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of production automation, and more specifically, to an automatic water blowing device for a shaft-like long workpiece before painting and a use method thereof. Background Art

[0002] At present, in the process of processing vehicle parts, long workpieces such as automobile drive shafts need to be cleaned before entering the painting process. After cleaning, the water left on the workpiece needs to be blown dry before spraying paint. At present, the common practice is to manually use a compressed air nozzle to blow water on the workpiece, which has problems such as high noise, high labor intensity, poor local drying effect and high cost. Since the drive shaft is mixed-line sprayed, the drive shaft parts hanging on the spray paint transmission chain are of different lengths, which also increases the difficulty of manual operation.

[0003] Therefore, it is necessary to study a solution that can automatically and efficiently complete the water blowing process. Summary of the invention

[0004] In view of the technical problems existing in the prior art, the present invention provides an automatic water blowing device before painting of a long shaft-like workpiece and a method for using the device. The device automatically detects the length of the workpiece to adjust the water blowing range and automatically performs a water blowing operation that matches the size of the workpiece, thereby solving the problems of high noise, high labor intensity, low efficiency and high cost existing in manual water blowing.

[0005] According to a first aspect of the present invention, there is provided an automatic water blowing device for a shaft-like long workpiece before painting, comprising a conveying mechanism, a detection mechanism and a water blowing mechanism, wherein: A conveying mechanism, detachably connected to the workpiece, and used to drive the workpiece to move; A detection mechanism, disposed adjacent to the conveying mechanism, for detecting the length of the workpiece; The water blowing mechanism is arranged adjacent to the conveying mechanism and at the rear end of the detection mechanism, and is used to configure the water blowing range according to the length of the workpiece and blow compressed gas to the workpiece according to the water blowing range.

[0006] Based on the above technical solution, the present invention can also be improved as follows.

[0007] Preferably, the conveying mechanism comprises a conveying chain and a plurality of grabbing members, wherein the plurality of grabbing members are fixedly connected to the conveying chain, the conveying chain is used to drive the grabbing members to move, and the grabbing members are used to grab the workpieces.

[0008] Preferably, the detection mechanism includes several pairs of photoelectric detection units arranged adjacent to the conveying mechanism, the several pairs of photoelectric detection units are arranged in sequence along the length direction of the workpiece, and each pair of the photoelectric detection units is symmetrically arranged about the conveying mechanism; when the conveying mechanism is operating, the workpiece passes through the detection mechanism.

[0009] Preferably, the water blowing mechanism comprises an air knife arranged along the length direction of the workpiece, the air blowing range of the air knife can be controlled in sections, and the air blowing direction of the air knife is toward the workpiece.

[0010] Preferably, the water blowing mechanism comprises a plurality of groups of air knives, and the plurality of groups of air knives are arranged on both sides of the conveying mechanism along the moving direction of the workpiece.

[0011] Preferably, it further comprises a mounting frame, and the detection mechanism and the water blowing mechanism are arranged on the mounting frame.

[0012] According to a second aspect of the present invention, based on the aforementioned automatic water blowing device before painting of a shaft-like long workpiece, a method for using the automatic water blowing device before painting of a shaft-like long workpiece is also provided, comprising: S1, drives the workpiece to move along the production line; S2, detect the length of the workpiece; S3, configuring a water blowing range according to the length of the workpiece, and blowing compressed gas toward the workpiece according to the water blowing range.

[0013] Further, step S1 includes: Grasp and fix one end of the workpiece so that the length direction of the workpiece is arranged in the longitudinal direction; Drive the fixed end of the workpiece to move so that the entire workpiece moves along the production line.

[0014] Further, step S2 includes: Scan the workpiece to obtain photoelectric detection data; Eliminate interference data of the fixed end of the workpiece from the photoelectric detection data, and extract position data of the two end points of the workpiece in the length direction; The length dimension of the workpiece is calculated according to the two end point position data.

[0015] Further, step S3 includes: The water blowing range required for the workpiece is calculated according to the length size of the workpiece and the position data of the two end points, and the water blowing range is matched with the air blowing range of the air knife to determine the segmented control range of the air knife; Obtain the blowing timing and blowing duration according to the workpiece attribute parameters and the workpiece moving speed; According to the segmented control range, blowing timing and blowing duration of the air knife, the air knife is controlled to blow compressed gas toward the workpiece.

[0016] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects: the present invention automatically detects the length of the workpiece to adjust the water blowing range, and automatically implements the water blowing operation that matches the size of the workpiece. It is suitable for workpieces of various sizes and solves the problems of high noise, high labor intensity, low efficiency and high cost existing in manual water blowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a three-dimensional structure of an automatic water blowing device for a shaft-like long workpiece before painting provided by an embodiment of the present invention from a certain viewing angle; Figure 2 A schematic diagram of the three-dimensional structure of an automatic water blowing device for a shaft-like long workpiece before painting provided by an embodiment of the present invention from another perspective; Figure 3 A side view of an automatic water blowing device before painting of a shaft-like long workpiece provided by an embodiment of the present invention; Figure 4 Another side view of an automatic water blowing device before painting of a shaft-like elongated workpiece provided by an embodiment of the present invention; Figure 5 A schematic diagram of a top view of an automatic water blowing device before painting a shaft-like elongated workpiece provided by an embodiment of the present invention; Figure 6 A flow chart of a method for using an automatic water blowing device before painting a shaft-like elongated workpiece provided by an embodiment of the present invention.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Conveying mechanism, 101. Conveying chain, 102. Grabbing member, 2. Detecting mechanism, 201. Photoelectric detecting unit, 3. Water blowing mechanism, 301. Air knife, 4. Workpiece, 5. Control unit, 6. Mounting frame. DETAILED DESCRIPTION

[0019] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0021] It will be appreciated that spatial relationship terms such as "under", "beneath", "below", "under", "above", "above", etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, the element or feature described as "under other elements" or "under it" or "under it" will be oriented as "on" the other elements or features. Therefore, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0022] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0023] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0024] See also Figure 1~Figure 5 , which shows a schematic structural diagram of an automatic water blowing device for a shaft-like long workpiece before painting provided by an embodiment of the present invention at multiple viewing angles.

[0025] like Figure 1~Figure 5 As shown, the present embodiment provides an automatic water blowing device for a shaft-like long workpiece before painting, comprising a conveying mechanism 1, a detection mechanism 2 and a water blowing mechanism 3, wherein: The conveying mechanism 1 is detachably connected to the workpiece 4 and is used to drive the workpiece 4 to move; the workpiece 4 is a long workpiece 4, for example Figure 1~Figure 5 The drive shaft shown; A detection mechanism 2, disposed adjacent to the conveying mechanism 1, for detecting the length of the workpiece 4; The water blowing mechanism 3 is disposed adjacent to the conveying mechanism 1 and at the rear end of the detecting mechanism 2 , and is used to configure a water blowing range according to the length of the workpiece 4 , and blow compressed gas toward the workpiece 4 according to the water blowing range.

[0026] Understandably, Figure 5 The moving direction indicated by the arrow in the top view is the flow direction of the workpiece 4 in the production line. The conveying mechanism 1 carries the workpiece 4 and Figure 5 The workpiece 4 moves in the direction indicated by the arrow, passing through the detection mechanism 2 and the water blowing mechanism 3 in sequence. The detection mechanism 2 detects the workpiece 4 passing through to determine the length of the workpiece 4, and the length is used to determine the water blowing range to ensure that the water blowing range fully covers the workpiece 4 and ensures the water blowing effect. The water blowing mechanism 3 blows enough compressed air to the workpiece 4 according to the water blowing range matching the current workpiece 4 to remove the residual moisture on the workpiece 4.

[0027] The device of the present invention realizes the automation of the water blowing process, adjusts the water blowing range by automatically detecting the length of the workpiece 4, and automatically realizes the water blowing operation matching the size of the workpiece 4. It is suitable for workpieces of various sizes, solves the problem of identifying the length of the workpiece 4 and the water blowing position in mixed-line painting, and the problem of how to blow, and also solves the problems of high noise, high labor intensity, low efficiency and high cost existing in manual water blowing.

[0028] Based on the above technical solution, this embodiment can also be improved as follows.

[0029] In one possible implementation, Figure 1~Figure 5 As shown, the conveying mechanism 1 includes a conveying chain 101 and a plurality of grabbing members 102, and the plurality of grabbing members 102 are fixedly connected to the conveying chain 101. For example, a plurality of grabbing members 102 are fixedly arranged on the lower side of the conveying chain 101, and these grabbing members 102 are intermittently arranged at a preset distance. When the conveying chain 101 is running, the grabbing members 102 arranged thereon are driven to move synchronously. The grabbing member 102 is detachably connected to the workpiece 4, and is used to fix the workpiece 4 during the process, so that the workpiece 4 moves with the transmission chain, and the workpiece 4 can be released after the process is completed. The grabbing member 102 can adopt a hook, a buckle, a locking bolt and other structures, preferably without interfering with the production process.

[0030] Preferably, the grabbing member 102 fixes one end of the workpiece 4, such as the top end of the workpiece 4, and the length direction of the workpiece 4 is arranged longitudinally. Therefore, when detecting the length of the workpiece 4, the interference of the grabbing member 102 in determining the upper end point of the workpiece 4 is eliminated through algorithm programming, and the length detection data of the workpiece 4 can be quickly obtained.

[0031] In one possible embodiment, the detection mechanism 2 includes several pairs of photoelectric detection units 201 arranged adjacent to the conveying mechanism 1, and the several pairs of photoelectric detection units 201 are arranged in sequence along the length direction of the workpiece 4, and each pair of the photoelectric detection units 201 is symmetrically arranged about the conveying mechanism 1; when the conveying mechanism 1 is operating, the workpiece 4 passes through the detection mechanism 2.

[0032] It can be understood that the photoelectric detection units 201 are arranged in pairs on both sides of the moving track of the workpiece 4, one end of which is the transmitting end and the other end is the detecting end. Assuming that there is no object blocking the two ends of the photoelectric detection unit 201 (for example, no workpiece 4 passes), the light signal emitted by the transmitting end reaches the detecting end and is detected by the detecting end. In this state, the detecting end generates a corresponding photoelectric signal A; when there is an object blocking (for example, the workpiece 4 passes), the light signal emitted by the transmitting end cannot be detected by the detecting end due to being blocked. In this state, the detecting end generates a corresponding photoelectric signal B. By judging whether the signal generated by the detecting end in each pair of photoelectric detection units 201 is the photoelectric signal A or the photoelectric signal B, it can be judged whether the position corresponding to any photoelectric detection unit 201 has passed. According to the detection results of all photoelectric detection units 201, the position of the workpiece 4 passing through the detection unit and the size of the workpiece 4 can be judged.

[0033] Based on the above principle, several pairs of photoelectric detection units 201 are arranged in sequence along the longitudinal direction. When the workpiece 4 passes through the detection mechanism 2, the position and size of the workpiece 4 can be determined by the changes in the photoelectric signals detected by the several pairs of photoelectric detection units 201. The preset algorithm is used to eliminate the interference of the gripper 102 on the determination of the end point of the workpiece 4, and the length detection data and position data of the workpiece 4 can be quickly obtained.

[0034] In one possible implementation manner, the water blowing mechanism 3 includes an air knife 301 arranged along the length direction of the workpiece 4 , the blowing range of the air knife 301 can be controlled in sections, and the blowing direction of the air knife 301 is toward the workpiece 4 .

[0035] For example, the water blowing mechanism 3 is controlled by the control unit 5 shown in the figure. The detection result obtained by the detection mechanism 2 is input to the control unit 5, and after being analyzed and processed by the control unit 5, the water blowing position and water blowing range matching the current workpiece 4 are adjusted. The air knife 301 is controlled by an explosion-proof solenoid valve controlled by a PLC to control the water blowing timing and time of each air nozzle. When the workpiece 4 passes through the water blowing mechanism 3, the control unit 5 controls the air knife 301 corresponding to the water blowing range to blow compressed air to the workpiece 4 to remove moisture on the workpiece 4.

[0036] In one possible implementation, in order to achieve a better water blowing effect, the water blowing mechanism 3 includes multiple groups of air knives 301, and the multiple groups of air knives 301 are arranged on both sides of the conveying mechanism 1 along the moving direction of the workpiece 4. The multiple groups of air knives 301 continuously blow compressed air to both sides of the workpiece 4, thereby eliminating the water blowing blind area and effectively blowing away the residual moisture on the workpiece 4.

[0037] In one possible embodiment, the device further includes a mounting frame 6, and the detection mechanism 2 and the water blowing mechanism 3 are arranged on the mounting frame 6. For example, the conveying mechanism 1 is arranged above the production line, and the workpiece 4 moves along the production line in a suspended manner. The mounting frame 6 is provided with a plurality of U-shaped brackets arranged in sequence along the production line, and the notches of the U-shaped brackets are arranged upward. When the conveying mechanism 1 drives the workpiece 4 to move, the workpiece 4 passes through the inner sides of the grooves of the plurality of U-shaped brackets in sequence, and the two ends of the photoelectric detection unit 201 are symmetrically arranged on both sides of the groove of a certain U-shaped bracket with respect to the moving path of the workpiece 4, and the plurality of wind knives 301 are arranged on both sides of the grooves of the remaining U-shaped brackets, thereby realizing the automatic water blowing operation on the long workpiece 4.

[0038] like Figure 6 As shown, based on the automatic water blowing device for long shaft workpieces before painting provided in the above embodiments, this embodiment also provides a method for using the device, the method comprising: S1, driving the workpiece 4 to move along the production line; specifically including: Grasp and fix one end of the workpiece 4 so that the length direction of the workpiece 4 is arranged in the longitudinal direction; The fixed end of the workpiece 4 is driven to move, so that the workpiece 4 as a whole moves along the production line.

[0039] S2, detecting the length of the workpiece 4; specifically including: Scanning the workpiece 4 to obtain photoelectric detection data; Eliminate the interference data of the fixed end of the workpiece 4 from the photoelectric detection data, and extract the position data of the two end points of the workpiece 4 in the length direction; The length dimension of the workpiece 4 is calculated based on the two end point position data.

[0040] S3, configuring a water blowing range according to the length of the workpiece 4, and blowing compressed gas toward the workpiece 4 according to the water blowing range, specifically including: The water blowing range required by the workpiece 4 is calculated according to the length dimension of the workpiece 4 and the position data of the two end points, and the water blowing range is matched with the air blowing range of the air knife 301 to determine the segmented control range of the air knife 301; Obtain the blowing timing and blowing duration according to the attribute parameters of the workpiece 4 and the moving speed of the workpiece 4; According to the segmented control range, blowing timing and blowing duration of the air knife 301 , the air knife 301 is controlled to blow compressed gas toward the workpiece 4 .

[0041] The present invention provides an automatic water blowing device before painting of a shaft-like long workpiece and a use method thereof, which realizes the automation of the water blowing process. By automatically detecting the length of the workpiece 4 to adjust the water blowing range, it can be applicable to long workpieces 4 of various sizes and automatically realize the water blowing operation matching the size of the workpiece 4, solving the problems of high noise, high labor intensity, low efficiency and high cost existing in manual water blowing.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic water blowing device for long shaft workpieces before painting, characterized in that: It comprises a conveying mechanism (1), a detection mechanism (2) and a water blowing mechanism (3), wherein: A conveying mechanism (1) is detachably connected to the workpiece (4) and is used to drive the workpiece (4) to move; A detection mechanism (2), disposed adjacent to the conveying mechanism (1), and used to detect the length dimension of the workpiece (4); A water blowing mechanism (3) is arranged adjacent to the conveying mechanism (1) and at the rear end of the detection mechanism (2), and is used to configure a water blowing range according to the length of the workpiece (4) and to blow compressed gas toward the workpiece (4) according to the water blowing range.

2. The automatic water blowing device for a shaft-like long workpiece before painting according to claim 1 is characterized in that: The conveying mechanism (1) comprises a conveying chain (101) and a plurality of gripping members (102), wherein the plurality of gripping members (102) are fixedly connected to the conveying chain (101), the conveying chain (101) is used to drive the gripping members (102) to move, and the gripping members (102) are used to grip workpieces (4).

3. The automatic water blowing device before painting of a shaft-like long workpiece according to claim 1 is characterized in that: The detection mechanism (2) comprises a plurality of pairs of photoelectric detection units (201) arranged adjacent to the conveying mechanism (1), the plurality of pairs of photoelectric detection units (201) being arranged in sequence along the length direction of the workpiece (4), and each pair of the photoelectric detection units (201) being arranged symmetrically with respect to the conveying mechanism (1); when the conveying mechanism (1) is in operation, the workpiece (4) passes through the detection mechanism (2).

4. The automatic water blowing device before painting of a shaft-like long workpiece according to claim 1 is characterized in that: The water blowing mechanism (3) comprises an air knife (301) arranged along the length direction of the workpiece (4); the air blowing range of the air knife (301) can be controlled in sections; and the air blowing direction of the air knife (301) is towards the workpiece (4).

5. The automatic water blowing device for a shaft-like long workpiece before painting according to claim 4 is characterized in that: The water blowing mechanism (3) comprises a plurality of groups of air knives (301), and the plurality of groups of air knives (301) are arranged on both sides of the conveying mechanism (1) along the moving direction of the workpiece (4).

6. The automatic water blowing device before painting of a shaft-like long workpiece according to claim 1 is characterized in that: It also comprises a mounting frame (6), and the detection mechanism (2) and the water blowing mechanism (3) are arranged on the mounting frame (6).

7. A method for using a device, based on the automatic water blowing device before painting of a shaft-like long workpiece according to any one of claims 1 to 6, characterized in that: include: S1, drives the workpiece (4) to move along the production line; S2, the length dimension of the detected workpiece (4); S3, configuring a water blowing range according to the length of the workpiece (4), and blowing compressed gas toward the workpiece (4) according to the water blowing range.

8. A method for using the device according to claim 7, characterized in that: Step S1 includes: Grasping and fixing one end of the workpiece (4) so ​​that the length direction of the workpiece (4) is arranged longitudinally; The fixed end of the workpiece (4) is driven to move, so that the workpiece (4) as a whole moves along the production line.

9. A method for using the device according to claim 7, characterized in that: Step S2 comprises: Scanning the workpiece (4) to obtain photoelectric detection data; Eliminating interference data of the fixed end of the workpiece (4) from the photoelectric detection data, and extracting position data of the two end points of the workpiece (4) in the length direction; The length dimension of the workpiece (4) is calculated based on the two end point position data.

10. A method for using the device according to claim 7, characterized in that: Step S3 includes: Calculating the water blowing range required for the workpiece (4) according to the length dimension of the workpiece (4) and the position data of the two end points, and matching the water blowing range with the air blowing range of the air knife (301) to determine the segmented control range of the air knife (301); Obtain the blowing timing and blowing duration according to the workpiece attribute parameters and the workpiece moving speed; The air knife (301) is controlled to blow compressed gas toward the workpiece (4) according to the segmented control range, blowing timing and blowing duration of the air knife (301).

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