Workpiece front and back surface screening tool, workpiece screening feeding device and feeding method

Abstract

The application provides a workpiece front and back surface screening tool, a workpiece screening feeding device and a feeding method, wherein the workpiece front and back surface screening tool comprises a screening baffle and an inclined channel, the screening baffle is located at the bottom end of the inclined channel, the feeding direction of the workpiece is from the top end of the inclined channel to the bottom end of the inclined channel, the front surface of the workpiece is an arc-shaped structure, and the back surface of the workpiece is a planar structure; the height of the screening baffle (21) is greater than the height of the arc-shaped structure; when the workpiece front surface is placed, the workpiece front surface can pass over the screening baffle; and when the workpiece back surface is placed, the workpiece back surface is blocked by the screening baffle. The workpiece front and back surface screening tool realizes screening of workpiece front and back surface placement in a mode that the screening baffle and the inclined channel cooperate with each other, and screening efficiency and screening accuracy in the workpiece feeding process are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of workpiece feeding equipment, in particular to a workpiece front and back surface screening tool, a workpiece screening feeding device and a feeding method. BACKGROUND

[0002] With the development of automatic production lines, workpiece feeding has gradually tended to be automated. In order to accelerate the automation process of automatic feeding, processing and discharging lines, it is necessary to remove abnormal conditions such as stacked workpieces and back-placed workpieces during the workpiece feeding process, so as to ensure that the workpieces entering the processing line can be normally processed.

[0003] For unordered feeding workpieces, the existing feeding device mainly identifies through visual shooting to remove abnormal conditions such as back-placed workpieces and stacked workpieces. For example, when the existing shell lower cover and other workpieces are fed, the back-placed workpieces identified by visual shooting need to be positioned and turned over manually, and the stacked workpieces identified by visual shooting need to be positioned and separated manually.

[0004] However, the visual shooting method has a certain misjudgment rate and is less accurate than mechanical identification. In addition, the visual shooting identification method has high technical requirements for equipment maintenance personnel and may have certain human identification errors due to different experiences of equipment maintenance personnel, which seriously affects the progress of automatic feeding. SUMMARY

[0005] To overcome the problems in the related art, one of the purposes of the present application is to provide a workpiece front and back surface screening tool, which realizes screening of workpiece front and back placement through the cooperation of a screening baffle and a slope channel, and improves the screening efficiency and accuracy in the workpiece feeding process.

[0006] A workpiece front and back surface screening tool, comprising a screening baffle and a slope channel, the screening baffle is located at the bottom end of the slope channel, the feeding direction of the workpiece is from the top end of the slope channel to the bottom end of the slope channel, the front surface of the workpiece is an arc structure, and the back surface of the workpiece is a flat surface; the height of the screening baffle is less than the height of the arc structure.

[0007] When the workpiece is placed on the front surface, it can pass over the screening baffle; when the workpiece is placed on the back surface, it is blocked by the screening baffle.

[0008] The front and back of the workpiece of the application are different in shape, and the shape difference between the front and back is used to set an inclined slope channel and a screening baffle at the bottom of the slope channel, so that the workpiece can smoothly pass through the screening baffle when the front of the workpiece is placed, and the workpiece cannot smoothly pass through the screening baffle when the back of the workpiece is placed. Therefore, only by monitoring whether the workpiece stays at the position of the screening baffle for more than a preset time, it can be judged whether the workpiece is placed with the front or the back. The application uses a mechanical structure of the slope channel combined with the screening baffle to screen the front and back of the workpiece, which improves the identification accuracy and efficiency compared with the identification method of visual shooting in the prior art.

[0009] In the preferred technical solution of the application, when the workpiece is placed with the front, the bottom of the workpiece presents an arc-shaped structure with the middle higher and the two ends lower along the incoming direction of the workpiece, and when the workpiece is placed with the back, the bottom of the workpiece is a planar structure.

[0010] When the workpiece is placed with the front, the bottom of the workpiece presents an arc-shaped structure with the middle higher and the two ends lower along the incoming direction of the workpiece, and the height of the screening baffle is slightly smaller than the height of the arc-shaped bottom of the workpiece. When the workpiece is placed with the front, the surface of the workpiece abutting against the slope channel is an arc-shaped surface, and the height and the size along the direction perpendicular to the slope channel of the arc-shaped surface are slightly larger than the height of the screening baffle, so that when the workpiece moves towards the screening baffle under the action of the conveying line, it can smoothly pass through the screening baffle. When the workpiece is placed with the back, the bottom of the workpiece is a planar structure, that is, the surface of the workpiece abutting against the slope channel is a planar surface parallel to the slope channel, and at this time, when the workpiece moves towards the screening baffle under the action of the conveying line, it is blocked by the screening baffle. The screening of the workpiece placed with the front or the back can be realized by a simple screening baffle, which improves the screening efficiency of the placement direction of the workpiece during feeding.

[0011] In the preferred technical solution of the application, a notch is arranged in the slope channel, and an ejection assembly is arranged on the side of the slope channel opposite to the screening baffle, which can abut against the side of the workpiece away from the screening baffle through the notch, so that the workpiece placed with the back is flipped over.

[0012] In the application, the ejection assembly can abut against the top end of the workpiece through the notch, and the top end of the workpiece refers to the end away from the screening baffle, and the bottom end of the workpiece refers to the end close to the screening baffle. When the ejection assembly ejects the workpiece, the bottom end of the workpiece abuts against the screening baffle and does not move, while the top end of the workpiece flips over relative to the bottom end of the workpiece, thereby realizing the flipping of the front and back of the workpiece, so that the workpiece placed with the back is flipped over to be placed with the front, and the output slope channel enters the next process link. The ejection assembly of the application can realize the rapid flipping of the workpiece placed with the back, improve the automation level of workpiece feeding, avoid manual flipping, and avoid the workpiece placed with the back being rejected, which affects the feeding efficiency.

[0013] In the preferred technical scheme of the present application, the top end of the slope channel is provided with a side plate, the side plate is provided along the vertical direction, and the side plate close to the slope channel is provided with an ejection assembly;

[0014] The slope channel is connected with a turnover assembly, the turnover assembly is fixedly connected with the bottom end of the slope channel, and the top end of the slope channel is hingedly connected with the side plate; so that the turnover assembly can drive the slope channel to rotate around the top end of the slope channel; when the turnover assembly drives the slope channel to turn over to be parallel to the side plate, the ejection assembly abuts against the side of the workpiece away from the screening baffle through the gap.

[0015] In the present application, the side plate is a vertical plate, the front end of the vertical plate, i.e. the end close to the slope channel, is provided with an ejection assembly, and the ejection assembly can be a top block protruding relative to the side plate. When it is detected that the workpiece is placed on the reverse side and is blocked at the position of the screening baffle, the turnover assembly drives the slope channel to rotate around the top end of the slope channel until the slope channel turns over to be parallel to the side plate. At this time, the top block abuts against the top end of the workpiece through the gap, and at the same time, since the workpiece turns over to the vertical direction along with the slope channel, the pushing force of the top block on the top end of the workpiece makes the workpiece turn over and then output from the position of the screening baffle, i.e. the turnover feeding of the workpiece is realized. The top block is fixed and does not move, and through the turnover of the slope channel, the slope channel and the workpiece are turned over to the vertical state, thereby realizing the turnover of the workpiece. The vertical state can ensure that the workpiece is completely turned over and can ensure that the workpiece is smoothly turned over and output from the position of the screening baffle, thereby improving the turnover output efficiency of the workpiece placed on the reverse side.

[0016] In the preferred technical scheme of the present application, the turnover assembly comprises a turnover air cylinder and an air cylinder support frame, and the output end of the turnover air cylinder is connected with the bottom end of the slope channel.

[0017] The turnover air cylinder can be connected to the middle or bottom end position of the slope channel, i.e. a position not coinciding with the connection position of the slope channel and the side plate. When the turnover air cylinder extends or retracts, it can drive the top end of the slope channel to rotate relative to the top end of the slope channel, thereby realizing the angle adjustment of the slope channel. When the slope channel is used for normal workpiece transmission, the included angle between the slope channel and the side plate can be between 30° and 60°. When it is detected that the screening baffle blocks the workpiece placed on the reverse side, the turnover assembly drives the slope channel to turn over to the position parallel to the side plate, which is helpful for the turnover output of the workpiece placed on the reverse side. The turnover assembly of the present application has a simple structure, and through small power consumption of the turnover air cylinder, the smooth output of the workpiece placed on the front side and the turnover output of the workpiece placed on the reverse side can be realized, which is helpful for improving the turnover efficiency and output efficiency of the workpiece.

[0018] The second object of the present application is to provide a workpiece screening feeding device, which comprises the workpiece front and back surface screening tool as described above.

[0019] The mechanical structure of the slope channel combined with the screening baffle is used for front and back surface screening of the workpieces, and on this basis, the workpieces placed on the back surface can be automatically turned over, so that all workpieces can be sequentially fed, and the automation of feeding is improved.

[0020] In the preferred technical scheme of the present application, a transmission line, a feeding assembly and a height limiting assembly are further included; the feeding assembly, the height limiting assembly and the front and back surface screening tool are sequentially arranged in the transmission line; the output end of the feeding assembly is connected to the input end of the height limiting assembly, and the output end of the height limiting assembly is connected to the input end of the front and back surface screening tool.

[0021] The feeding assembly in the present application is used for sequentially placing the workpieces in the transmission line, the height limiting assembly is used for detecting whether the workpieces are stacked to ensure that a single workpiece can smoothly pass through and the stacked workpieces can pass through after being separated, and the front and back surface screening tool is used for screening whether the workpieces are placed on the front surface or the back surface to ensure that the workpieces placed on the front surface are smoothly output for feeding and the workpieces placed on the back surface are output for feeding after being turned over; through the cooperation of the height limiting assembly and the front and back surface screening tool, the present application can ensure that the workpieces are not stacked and are all placed on the front surface during feeding, improve the automation level of the sequential feeding of the workpieces, and help the subsequent process to directly process the workpieces, thereby improving the workpiece feeding efficiency and the processing efficiency.

[0022] In the preferred technical scheme of the present application, a feeding frame is further included; the feeding assembly is located above the feeding frame, and the feeding assembly is located in a track on the top of the feeding frame; the extension direction of the track is perpendicular to the transmission line; the feeding assembly includes M feeding manipulators sequentially arranged along the transmission direction of the transmission line.

[0023] The feeding assembly in the present application can move along the track to clamp the workpieces and sequentially place the workpieces, and the manipulators are multiple, which helps to improve the workpiece feeding efficiency. The manipulators sequentially place the workpieces to avoid the stacking of the workpieces and improve the automation level and efficiency of feeding.

[0024] In the preferred technical scheme of the present application, the side of the transmission line is provided with a recovery box; the height limiting assembly includes a height limiting plate and a push plate; the height limiting plate is located in the transmission line, and the distance between the height limiting plate and the transmission line is greater than the height of a single workpiece and less than the height of two workpieces; and the push plate and the recovery box are respectively located on the two sides of the transmission line.

[0025] The distance between the height limiting plate and the conveying line in the application is greater than the height of a single workpiece and less than the height of two workpieces, so that a single workpiece can pass through, but stacked workpieces cannot pass through. In combination with the pushing plate, the separation and rejection of stacked workpieces and the rejection of non-stacked workpieces are ensured, so that all the workpieces entering the downstream are in the state of non-stacking one by one, and the orderliness and efficiency of workpiece feeding are improved.

[0026] The third object of the application is to provide a workpiece screening feeding method, comprising:

[0027] The feeding assembly places the workpieces in the conveying line in sequence;

[0028] The conveying line drives the workpieces to the height limiting assembly, if the stacked workpieces cannot pass through the height limiting plate, the pushing plate pushes the stacked workpieces into the recycling box, and ensures that the workpieces pass through the height limiting plate in sequence;

[0029] The conveying line drives the workpieces to the top end of the inclined channel, if the workpieces are placed on the front surface, the workpieces can pass through the screening baffle for feeding, if the workpieces are placed on the back surface, the workpieces are blocked by the screening baffle, when the workpieces are blocked by the screening baffle, the ejecting assembly penetrates through the gap and abuts against the side of the workpiece away from the screening baffle, so that the workpieces are flipped and then fed.

[0030] The application realizes the automatic feeding of workpieces in an orderly and automatic manner by the automatic placement of workpieces, the automatic separation and rejection of stacked workpieces by the height limiting assembly, and the front and back surface screening and flipping of workpieces by the mechanical structure of the inclined channel and the screening baffle, and improves the efficiency of workpiece feeding, which is helpful for subsequent batch automatic processing of workpieces.

[0031] The application has the following beneficial effects:

[0032] The application provides a workpiece front and back surface screening tool, which comprises a screening baffle and an inclined channel, the screening baffle is located at the bottom end of the inclined channel, the feeding direction of the workpiece is from the top end of the inclined channel to the bottom end of the inclined channel, the front surface of the workpiece is in an arc structure, and the back surface of the workpiece is in a planar shape; the height of the screening baffle is less than the height of the arc structure; when the workpiece is placed on the front surface, the workpiece can pass through the screening baffle; and when the workpiece is placed on the back surface, the workpiece is blocked by the screening baffle. The front and back surfaces of the workpiece are different in shape, the shape difference between the front surface and the back surface is utilized, the inclined channel and the screening baffle located at the bottom of the inclined channel are arranged, so that when the workpiece is placed on the front surface, the workpiece can smoothly pass through the screening baffle, and when the workpiece is placed on the back surface, the workpiece cannot smoothly pass through the screening baffle, so that only the monitoring of whether the workpiece stays at the position of the screening baffle for more than a preset time can determine whether the workpiece is placed on the front surface or the back surface; the mechanical structure of the inclined channel and the screening baffle is adopted to screen the front and back surfaces of the workpiece, compared with the recognition mode of visual photographing in the prior art, the recognition accuracy and efficiency are improved.

[0033] The application also provides a feeding device for workpiece screening, which comprises the workpiece front and back surface screening tool as described above, and adopts a mechanical structure of a slope passage cooperating with a screening baffle to screen the front and back surfaces of the workpieces. On this basis, the workpieces placed on the back surface can be automatically turned over to ensure that all workpieces can be sequentially fed, and the automation of feeding is improved.

[0034] The application also provides a feeding method for workpiece screening. The feeding assembly sequentially places workpieces in a transmission line. The transmission line drives the workpieces to the height limiting assembly. If the workpiece stack cannot pass through the height limiting plate, the push plate pushes the stacked workpieces into the recycling box. The workpieces sequentially pass through the height limiting plate. The transmission line drives the workpieces to the top end of the slope passage. If the workpiece is placed on the front surface, it can pass through the screening baffle for feeding. If the workpiece is placed on the back surface, it is blocked by the screening baffle. When the workpiece is blocked by the screening baffle, the ejection assembly abuts against the side of the workpiece away from the screening baffle through the gap, so that the workpiece is turned over for feeding. Through the automatic placement of the workpieces, the automatic separation and rejection of the stacked workpieces by the height limiting assembly, and the mechanical structure of the slope passage cooperating with the screening baffle for screening the front and back surfaces of the workpieces and turning over, the workpieces are sequentially and automatically fed, the efficiency of workpiece feeding is improved, and the subsequent batch automatic processing of the workpieces is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a whole schematic view of the workpiece front and back surface screening tool.

[0036] Figure 2 It is a side schematic view of the workpiece front and back surface screening tool.

[0037] Figure 3 It is a schematic view of the workpiece placed on the front surface and the back surface passing through the slope passage.

[0038] Figure 4 It is a whole structural schematic view of the feeding device.

[0039] Figure 5 It is a front schematic view of the feeding device.

[0040] Figure 6 It is a top view of the feeding device.

[0041] Figure 7 It is a structural schematic view of the feeding assembly.

[0042] Figure 8 It is a structural schematic view of the height limiting assembly.

[0043] Reference signs:

[0044] 11. Robotic arm; 12. Side baffle; 13. Conveyor line; 14. Height limit plate; 15. Push plate; 16. Inclined passage; 17. Tilting cylinder; 18. Cylinder support frame; 19. Side plate; 20. Ejection assembly; 21. Screening baffle; 22. Track; 23. Feeding frame; 24. Recycling bin; 25. Notch. Detailed Implementation

[0045] Preferred embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0046] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0047] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0048] Example 1

[0049] like Figures 1-3 As shown, this application provides a workpiece front and back screening fixture, including a screening baffle 21 and a ramp channel 16. The screening baffle 21 is located at the bottom end of the ramp channel 16, and the workpiece feeds from the top to the bottom end of the ramp channel 16. The front of the workpiece has an arc-shaped structure, and the back of the workpiece is flat. The height of the screening baffle is less than the height of the arc-shaped structure. When the workpiece is placed front-side up, it can pass over the screening baffle 21; when the workpiece is placed back-side up, it is blocked by the screening baffle 21.

[0050] The front and back of the workpiece of the application are different in shape. By using the shape difference between the front and back, an inclined slope passage 16 and a screening baffle 21 located at the bottom of the slope passage 16 are arranged to ensure that the workpiece can smoothly pass through the screening baffle 21 when the front of the workpiece is placed, and the workpiece cannot smoothly pass through the screening baffle 21 when the back of the workpiece is placed. In this way, only the residence time of the workpiece at the position of the screening baffle 21 needs to be monitored to determine whether the workpiece is placed with the front or the back. The application uses a mechanical structure of the slope passage 16 cooperating with the screening baffle 21 to screen the front and back of the workpiece, which improves the recognition accuracy and efficiency compared with the recognition mode of visual shooting in the prior art.

[0051] In the application, the screening baffle 21 is a plate perpendicular to the slope passage 16, and the height of the screening baffle 21 will not exceed the height of the workpiece, which needs to ensure that the workpiece can pass through the screening baffle 21 when the front of the workpiece is placed, and will not hinder the transmission of the workpiece placed with the front. At the same time, the height of the screening baffle 21 needs to be determined according to the shape of the front and back of the workpiece.

[0052] As shown in Figure 3 As a specific embodiment, when the workpiece is placed with the front, the bottom of the workpiece presents an arc-shaped structure with the middle higher and the two ends lower along the incoming direction of the workpiece. At this time, the height of the screening baffle 21 is slightly smaller than the height of the arc-shaped structure of the bottom of the workpiece, which ensures that the workpiece can smoothly pass through the screening baffle 21. The height of the arc-shaped structure of the bottom of the workpiece refers to the minimum straight-line distance between the lowest point of the arc-shaped structure and the highest point of the arc-shaped structure within the arc-shaped structure. In this way, it can be ensured that when the workpiece is placed with the front, the surface of the workpiece abutting against the slope passage 16 is an arc-shaped surface, and the height and the size along the direction perpendicular to the slope passage 16 of the arc-shaped surface are slightly larger than the height of the screening baffle 21, so that when the workpiece moves towards the screening baffle 21 under the action of the transmission line 13, it can smoothly pass through the screening baffle 21.

[0053] When the workpiece is placed with the back, the bottom of the workpiece is a planar structure, that is, the surface of the workpiece abutting against the slope passage 16 is a plane parallel to the slope passage 16. At this time, when the workpiece moves towards the screening baffle 21 under the action of the transmission line 13, it is blocked by the screening baffle 21.

[0054] Further, a detector can be arranged at the position of the screening baffle 21 or the bottom end of the slope passage 16. The detector is used to detect the residence time of the workpiece at the position of the screening baffle 21. When the residence time of the workpiece is greater than a preset value, such as greater than 5s, it can be judged that the workpiece is placed with the back and cannot pass through the screening baffle 21. The workpiece needs to be flipped manually or by the ejection assembly 20 before being output.

[0055] As another specific embodiment, when the workpiece is placed with the front face, the bottom of the workpiece presents a first arc-shaped structure of high in the middle and low at both ends along the incoming direction of the workpiece, when the workpiece is placed with the front face, the bottom of the workpiece presents a second arc-shaped structure of high in the middle and low at both ends along the incoming direction of the workpiece, and the curvature of the first arc-shaped structure is greater than the curvature of the second arc-shaped structure. Here, the curvature refers to the minimum straight-line distance between the lowest point of the arc-shaped structure and the highest point of the arc-shaped structure. At this time, the height of the screening baffle 21 is greater than the height of the second arc-shaped structure and less than the height of the first arc-shaped structure, ensuring that the first arc-shaped structure of the bottom of the workpiece can smoothly pass through the screening baffle 21 when the workpiece is placed with the front face; while the second arc-shaped structure of the bottom of the workpiece cannot pass through the screening baffle 21 when the workpiece is placed with the back face.

[0056] Similarly, a detector is arranged at the position of the screening baffle 21 or the position of the bottom end of the inclined channel 16, and the detector is used to detect the residence time of the workpiece at the position of the screening baffle 21. When the residence time of the workpiece is greater than a preset value, it can be judged that the workpiece is placed with the back face and cannot pass through the screening baffle 21, and the workpiece needs to be flipped by the manual or the ejection assembly 20 before being output. The detector and the ejection assembly 20 can be directly connected in communication, or can be connected in communication through the control center of the front-back face screening tooling.

[0057] In the present application, the inclined channel 16 is an inclined channel, that is, the included angle with the horizontal direction is an acute angle, and the workpiece on the inclined channel 16 can be transmitted from the top end to the bottom end of the inclined channel 16 under the action of gravity.

[0058] Alternatively, the inclined channel 16 of the present application is an inclined channel, and a transmission line 13 is arranged in the inclined channel 16. The workpiece on the inclined channel 16 can be transmitted from the top end to the bottom end of the inclined channel 16 under the action of gravity.

[0059] Embodiment 2

[0060] As shown in Figures 1-3 The present application provides a front-back face screening tooling for workpieces, which comprises a screening baffle 21 and an inclined channel 16. The screening baffle 21 is located at the bottom end of the inclined channel 16. The incoming direction of the workpiece is from the top end of the inclined channel 16 to the bottom end of the inclined channel 16. The front face of the workpiece is an arc-shaped structure, and the back face of the workpiece is a flat surface. The height of the screening baffle is less than the height of the arc-shaped structure. When the workpiece is placed with the front face, it can pass through the screening baffle 21; when the workpiece is placed with the back face, it is blocked by the screening baffle 21.

[0061] Specifically, as shown in Figure 3As shown, when the workpiece is placed in the front, the bottom of the workpiece presents an arc-shaped structure with the middle higher and the two ends lower along the incoming direction of the workpiece, and when the workpiece is placed in the back, the bottom of the workpiece is a planar structure. When the workpiece is placed in the front, the bottom of the workpiece presents an arc-shaped structure with the middle higher and the two ends lower along the incoming direction of the workpiece, and the height of the screening baffle 21 is slightly smaller than the height of the arc-shaped bottom of the workpiece. It is ensured that when the workpiece is placed in the front, the surface of the workpiece abutting against the inclined channel 16 is an arc-shaped surface, and the height and the size along the direction perpendicular to the inclined channel 16 of the arc-shaped surface are slightly larger than the height of the screening baffle 21, so that when the workpiece moves towards the screening baffle 21 under the action of the conveying line 13, the workpiece can smoothly pass through the screening baffle 21. When the workpiece is placed in the back, the bottom of the workpiece is a planar structure, that is, the surface of the workpiece abutting against the inclined channel 16 is a planar surface parallel to the inclined channel 16, and at this time, when the workpiece moves towards the screening baffle 21 under the action of the conveying line 13, the workpiece is blocked by the screening baffle 21. The screening of the workpiece placed in the front or the back can be realized by the simple screening baffle 21, and the screening efficiency of the placement direction of the workpiece during feeding is improved.

[0062] After detecting that the workpiece is placed in the back, the workpiece placed in the back can be directly rejected, that is, the workpiece is pushed into the recycling box 24 by a push rod or other mechanism, or the workpiece is manually turned over so that the workpiece is turned over and continues to be fed after being turned over.

[0063] In order to improve the automation level of feeding, a notch 25 is arranged in the inclined channel 16, a ejection assembly 20 is arranged on the side of the inclined channel 16 opposite to the screening baffle 21, the ejection assembly 20 can abut against the side of the workpiece away from the screening baffle 21 through the notch 25, so that the workpiece placed in the back is turned over.

[0064] In the present application, the ejection assembly 20 can abut against the top end of the workpiece through the notch 25, the top end of the workpiece refers to the end away from the screening baffle 21, and the bottom end of the workpiece refers to the end close to the screening baffle 21. When the ejection assembly 20 ejects the workpiece, the bottom end of the workpiece abuts against the screening baffle 21 and does not move, and at the same time, the top end of the workpiece is turned over relative to the bottom end of the workpiece, so as to realize the turning over of the front and back of the workpiece, so that the workpiece placed in the back is turned over to be placed in the front, and the output inclined channel 16 enters the next process link. The ejection assembly 20 of the present application can realize the rapid turning over of the workpiece placed in the back, improve the automation level of workpiece feeding, avoid manual turning over, and also avoid the rejection of the workpiece placed in the back, which affects the feeding efficiency.

[0065] The ejection assembly 20 in the application can be arranged at the back of the inclined channel 16, that is, the position opposite to the workpiece conveying surface. The ejection assembly 20 can be an ejection cylinder. When the ejection cylinder is extended, the end of the cylinder is connected to an ejection piece. The ejection piece pushes the top end of the workpiece, so that the top end of the workpiece is flipped relative to the bottom end of the workpiece, realizing the flipping of the workpiece from the reverse surface to the front surface.

[0066] Specifically, the top end of the inclined channel 16 is provided with a side plate 19. The side plate 19 is arranged along the vertical direction. The side plate 19 is arranged close to one side of the inclined channel 16. The side plate 19 is provided with an ejection assembly 20. The inclined channel 16 is connected to a flipping assembly. The flipping assembly is fixedly connected to the bottom end of the inclined channel 16. The top end of the inclined channel 16 is hingedly connected to the side plate. The flipping assembly can drive the inclined channel 16 to rotate around the top end of the inclined channel 16 as the axis. When the flipping assembly drives the inclined channel 16 to flip to be parallel to the side plate 19, the ejection assembly 20 penetrates the gap 25 and abuts against the side of the workpiece away from the screening baffle 21.

[0067] The side plate 19 in the application is a vertical plate. The front end of the vertical plate, that is, the end close to the inclined channel 16, is provided with an ejection assembly 20. The ejection assembly 20 can be a top block protruding relative to the side plate 19. When it is detected that the workpiece is placed on the reverse surface and is blocked at the position of the screening baffle 21, the flipping assembly drives the inclined channel 16 to rotate around the top end of the inclined channel 16 as the axis until the inclined channel 16 is flipped to be parallel to the side plate 19. At this time, the top block penetrates the gap 25 and abuts against the top end of the workpiece. At the same time, since the workpiece is flipped to be in the vertical direction along with the inclined channel 16, the pushing force of the top block on the top end of the workpiece makes the workpiece flip and then be output from the position of the screening baffle 21, that is, the flipping and feeding of the workpiece are realized. The top block in the application is fixed. The flipping of the inclined channel 16 makes the inclined channel 16 and the workpiece flip to be in the vertical state, thereby realizing the flipping of the workpiece. The vertical state can ensure that the workpiece is completely flipped and can ensure that the workpiece is smoothly flipped and output from the position of the screening baffle 21, thereby improving the flipping and output efficiency of the workpiece placed on the reverse surface.

[0068] The flipping assembly in the application includes a flipping cylinder 17 and a cylinder support frame 18. The output end of the flipping cylinder 17 is connected to the bottom end of the inclined channel 16.

[0069] In actual operation, the turnover cylinder 17 can be connected to the middle or bottom end of the slope passage 16, that is, a position not coinciding with the connection position of the slope passage 16 and the side plate 19. When the turnover cylinder 17 is extended or retracted, the top end of the slope passage 16 can be rotated relative to the top end of the slope passage 16, thereby realizing angle adjustment of the slope passage 16. When the slope passage 16 is used for normal workpiece transmission, the included angle between the slope passage 16 and the side plate 19 can be 30°-60°. When it is detected that the screening baffle 21 will place the workpiece in the reverse position, the turnover assembly drives the slope passage 16 to turn to a position parallel to the side plate 19, which is helpful for the turnover output of the workpiece placed in the reverse position. The turnover assembly of the present application has a simple structure. Through small power consumption of the turnover cylinder 17, the smooth output of the workpiece placed in the front position and the turnover output of the workpiece placed in the reverse position can be realized, which is helpful to improve the workpiece turnover efficiency and output efficiency.

[0070] Embodiment 3

[0071] As shown in Figures 1-8 , the present embodiment provides a feeding device for workpiece screening, which comprises the workpiece front-rear face screening tool of embodiment 2, and further comprises a transmission line 13, a feeding assembly and a height limiting assembly; the feeding assembly, the height limiting assembly and the front-rear face screening tool are sequentially arranged in the transmission line 13; the output end of the feeding assembly is connected to the input end of the height limiting assembly, and the output end of the height limiting assembly is connected to the input end of the front-rear face screening tool.

[0072] The feeding assembly in the present application is used for orderly placing workpieces in the transmission line 13. The height limiting assembly is used for detecting whether the workpieces are stacked to ensure that a single workpiece can smoothly pass through and a stacked workpiece can pass through after being separated. The workpiece front-rear face screening tool is used for screening whether the workpiece is placed in the front position or the reverse position to ensure that the workpiece placed in the front position is smoothly output for feeding and the workpiece placed in the reverse position is output for feeding after being turned over. Through the cooperation of the height limiting assembly and the workpiece front-rear face screening tool, the present application can ensure that the workpieces are not stacked and are all placed in the front position during feeding, thereby improving the automation level of the orderly feeding of the workpieces and being helpful for directly processing the workpieces in the subsequent process, thereby improving the workpiece feeding efficiency and processing efficiency.

[0073] As shown in Figures 4-6As shown, the feeding device of the present application comprises a feeding frame 23, the feeding assembly is located above the feeding frame 23, and the feeding assembly is located in the track 22 on the top of the feeding frame 23, the extension direction of the track 22 is perpendicular to the conveying line 13; the conveying line 13 is located at the middle position of the feeding frame 23. The feeding assembly can move along the track 22, the workpiece stack to be fed is located at the side of the feeding frame 23, the feeding assembly moves along the track 22, clamps the workpiece stack, and then places the workpiece stack on the conveying line 13 in turn, and the workpiece sequentially passes through the height limiting assembly and the front and back surface screening tool along the conveying line 13, and then is conveyed to the machining production line, thereby realizing the orderly feeding of the workpiece.

[0074] The feeding assembly of the present application comprises M feeding manipulators 11 arranged in turn along the conveying direction of the conveying line 13. Further, the manipulators 11 in the feeding assembly of the present application can be arranged in a matrix shape, as shown in the figure. Figure 7 As shown, the manipulators 11 are arranged in two rows and three columns, and the row direction of the matrix is the same as the conveying direction of the conveying line 13. The manipulators 11 can be permanent magnet adsorption type manipulators 11. Side baffles 12 are arranged on the side of the feeding position in the conveying line 13. The side baffles 12 prevent the workpiece from falling out of the outside of the conveying line 13 due to inertia when the manipulators 11 move to discharge. The first row of permanent magnet adsorption type manipulators 11 among the six manipulators 11 moves to above the conveying line 13 along the track 22, and the 1-1 permanent magnet adsorption manipulator 11 starts to discharge. After a short interval, the 1-2 and 1-3 permanent magnet adsorption manipulators sequentially discharge in turn. The workpiece placed on the conveying line 13 moves forward with the conveying line 13, thereby avoiding the workpiece from being stacked due to rolling. Then, the second row of permanent magnet adsorption manipulators moves to above the conveying line 13 along the track 22, and starts to discharge in turn from the 2-1 position to the 2-3 position. When the discharge at the 2-3 position is completed, the whole feeding and discharging action is completed. The feeding assembly drives the manipulators 11 to move to the workpiece stacking position along the track 22 to clamp the workpiece.

[0075] The feeding assembly of the present application can realize the clamping of the workpiece and the sequential placement of the workpiece. The manipulators 11 are multiple, which helps to improve the feeding efficiency. The manipulators 11 sequentially place the workpiece, thereby avoiding the workpiece stacking condition, and improving the automation level and efficiency of the feeding.

[0076] As shown in the figure, Figure 8 As shown, the side of the conveying line 13 is provided with a recycling box 24, the height limiting assembly comprises a height limiting plate 14 and a push plate 15, the height limiting plate 14 is located in the conveying line 13, and the distance between the height limiting plate 14 and the conveying line 13 is greater than the height of a single workpiece and less than the height of two workpieces; the push plate 15 and the recycling box 24 are respectively located on the two sides of the conveying line 13.

[0077] In actual operation, first adjust the height limiting plate 14 to the height just passing a workpiece, the workpiece moves along the conveying line 13, when passing the height limiting plate 14, if there is a slight stack, such as Figure 8 As shown on the left side, the height limiting plate 14 will stop the upper workpiece, after the lower workpiece passes, the upper workpiece falls and continues to pass. If there is a serious stack, such as Figure 8 As shown on the right side, when the height limiting plate 14 stops the upper workpiece, the lower workpiece cannot pass due to the obstruction of the upper workpiece, the push plate 15 extends to push the current stack of workpieces that cannot pass into the recycling box 24, completing the stack separation and non-stack rejection of the workpieces, and ensuring that all the workpieces entering the downstream are in the state of not stacking one by one.

[0078] In the present application, the distance between the height limiting plate 14 and the conveying line 13 is greater than the height of a single workpiece and less than the height of two workpieces, ensuring that a single workpiece can pass, but a stacked workpiece cannot pass. At the same time, in cooperation with the push plate 15, the stack separation and non-stack rejection of the workpieces are ensured, and all the workpieces entering the downstream are in the state of not stacking one by one, improving the orderliness and efficiency of the workpiece feeding.

[0079] In the present application, a detection sensor can be arranged on the side of the push plate 15 or the height limiting plate 14 close to the supporting plate, when the detection sensor detects that the workpiece stays for more than a preset value, such as more than 5s, it is judged that the workpieces are stacked, at this time the push rod is used to reject the stacked workpieces that cannot be separated. The detection sensor and the push rod can be directly connected in communication, or can be connected in communication through the control center of the feeding device.

[0080] After the workpiece passes through the height limiting assembly, it moves to the top end of the inclined channel 16, as shown in Figure 3 The material enters the inclined channel 6, such as a workpiece placed in the front, the bottom is arc-shaped, the screening baffle 21 cannot block the workpiece from sliding down, the workpiece placed in the front smoothly passes through the screening baffle 21, completing the front screening; as shown in Figure 3 The workpiece enters the inclined channel, such as a workpiece placed in the back, the bottom is flat, the right angle will be blocked by the screening baffle 21, so that the workpiece cannot smoothly pass through the screening baffle 21, the screening baffle 21 sends information to the turnover cylinder 17 after sensing the workpiece, the turnover cylinder 17 moves to turn the inclined channel downward to the vertical state, the inclined channel and the side plate 19 are in close contact, the top block extends from the gap 25 of the inclined channel to flip the workpiece on the inclined channel from the top, the workpiece is flipped under the action of gravity, realizing the screening and flipping function of the workpiece placed in the back. The turnover cylinder 17 can be fixed in the feeding frame 23 through the cylinder support frame 18.

[0081] Embodiment 4

[0082] As shown in Figures 1-8 The present application provides a workpiece screening feeding method, which comprises:

[0083] S1: The feeding assembly places the workpieces sequentially into the conveyor line 13; in this application, the feeding assembly is used to place the workpieces in an orderly manner into the conveyor line 13. For example... Figure 7 As shown, the robotic arms 11 are arranged in two rows and three columns, and the row direction of the matrix is ​​the same as the transmission direction of the transmission line 13. The robotic arms 11 can be permanent magnet adsorption type robotic arms 11. Side baffles 12 are set on the side of the loading position in the transmission line 13. The side baffles 12 prevent the workpiece from falling out of the transmission line 13 due to inertia when the robotic arms 11 are moving to release the workpiece. Among the six robotic arms 11, the permanent magnet adsorption type robotic arms 11 in the first row move along the track 22 to the top of the transmission line 13. The 1-1 permanent magnet adsorption robotic arm 11 starts to release the workpiece. After a short interval, the permanent magnet adsorption robotic arms 11 at positions 1-2 and 1-3 release the workpiece in sequence. The workpiece placed on the transmission line 13 moves forward with the transmission line 13 to avoid the workpieces being put down at the same time and rolling and stacking. Then, the second row of permanent magnet adsorption robot 11 moves along the track 22 to the top of the transmission line 13 and begins to release materials sequentially from position 2-1 to position 2-3. The material release is completed at position 2-3, and the entire material loading and unloading action is completed. The loading component drives the robot 11 to move along the track 22 to the workpiece stacking position to clamp the workpiece.

[0084] S2: The transmission line 13 carries the workpiece to the height limit component. If the stacked workpieces cannot pass through the height limit plate 14, the push plate 15 pushes the stacked workpieces into the recycling bin 24; ensuring that the workpieces pass through the height limit plate 14 in sequence.

[0085] The height-limiting component is used to detect whether workpieces are stacked, ensuring that a single workpiece can pass smoothly. Stacked workpieces are separated before passage. First, the height-limiting plate 14 is adjusted to a height just large enough for one workpiece to pass. The workpiece moves with the conveyor line 13. When passing the height-limiting plate 14, if there is slight stacking, such as… Figure 8 As shown on the left, the height restriction plate 14 will block the upper workpiece. After the lower workpiece passes through, the upper workpiece will fall and then the lower workpiece can continue to pass. If there is severe stacking, such as Figure 8 As shown on the right, when the height limit plate 14 blocks the upper workpiece, and the lower workpiece is blocked by the upper workpiece and cannot pass, the push plate 15 extends to push the currently impassable stacked workpiece into the recycling box 24, completing the stacking separation and non-stacked rejection of the workpiece, ensuring that all workpieces entering the downstream are in a non-stacked state.

[0086] S3: The transmission line 13 drives the workpiece to the top of the ramp channel 16. If the workpiece is placed face up, it can pass over the screening baffle 21 for feeding. If the workpiece is placed face down, it will be blocked by the screening baffle 21. When the workpiece is blocked by the screening baffle 21, the ejector component 20 passes through the notch 25 and abuts against the side of the workpiece away from the screening baffle 21, so that the workpiece is flipped over for feeding.

[0087] The workpiece front and back screening tool is used for screening whether the workpiece is placed in front or back, ensuring that the workpiece placed in front is smoothly output for feeding, and ensuring that the workpiece placed in back is output after being turned over for feeding. Figure 3 As shown in the figure, the material enters the slope channel 6, if the workpiece is placed in front, the bottom is arc-shaped, the screening baffle 21 cannot block the workpiece from sliding down, the workpiece placed in front smoothly passes through the screening baffle 21, and the front screening is completed. Figure 3 As shown in the figure, the workpiece enters the slope channel, if the workpiece is placed in back, the bottom is flat, the right angle will be dead against the screening baffle 21, so that the workpiece cannot smoothly pass through the screening baffle 21, the screening baffle 21 sends information to the turning cylinder 17 after sensing the workpiece, the turning cylinder 17 moves, the slope channel is turned down to the vertical state, the slope channel and the side plate 19 are attached, the jacking block extends from the gap 25 of the slope channel, and the workpiece on the slope channel is turned over from the top, the workpiece is turned over under the action of gravity, and the screening and turning function of the workpiece placed in back is realized.

[0088] The workpiece is placed automatically, the high-limit assembly separates and rejects the stacked workpiece automatically, the slope channel 16 cooperates with the mechanical structure of the screening baffle 21 to screen and turn over the workpiece, the workpiece is sequentially and automatically fed, the workpiece feeding efficiency is improved, and the workpiece is sequentially and automatically fed.

[0089] Unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions, and numerical values set forth in the examples herein are not limitations of the scope of the present application. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in proportion. The technology, methods and equipment known to those skilled in the related art can not be discussed in detail, but should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings. In the description of the present application, it should be understood that the orientation or position relationship indicated by orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without the opposite indication, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of the parts themselves.

[0090] For purposes of the description hereinafter, spatial

[0091] In addition, it should be noted that the terms "first", "second", and so on, merely identify the names of particular components for ease of reference, and thus do not constitute a limitation of the application and should not be construed as a limitation of the scope of the application.

[0092] The preferred embodiments of the application are described above in detail for the purposes of clarity and understanding. It should be appreciated that the application can be practiced in a variety of ways and that the application is not limited to the embodiments described above. Numerous modifications and changes can be made to the embodiments of the application without departing from the scope of the application. Accordingly, the whole of this application is to be interpreted in the broadest reasonable manner consistent with the principles of the application.

Claims

1. A workpiece front and back screening fixture, characterized in that, It includes a screening baffle (21) and a ramp channel (16). The screening baffle (21) is located at the bottom end of the ramp channel (16). The material feeding direction of the workpiece is from the top end of the ramp channel (16) to the bottom end of the ramp channel (16). The front of the workpiece is an arc-shaped structure, and the back of the workpiece is a flat shape. The height of the screening baffle (21) is less than the height of the arc-shaped structure. When the workpiece is placed face up, it can pass through the screening baffle (21); when the workpiece is placed face down, it is blocked by the screening baffle (21). The ramp channel (16) has a notch (25). An ejector assembly (20) is provided on the side of the ramp channel (16) opposite to the screening baffle (21). The ejector assembly (20) can pass through the notch (25) and abut against the side of the workpiece away from the screening baffle (21), causing the reversed workpiece to flip. A side plate (19) is provided at the top of the ramp channel (16). The side plate (19) is arranged vertically, and the ejector assembly (20) is provided on the side of the side plate (19) closest to the ramp channel (16). The ramp channel (16) is connected to a flipping assembly. The component is fixedly connected to the bottom end of the ramp channel (16), and the top end of the ramp channel (16) is hinged to the side plate; so that the flipping component can drive the ramp channel (16) to rotate around the top end of the ramp channel (16) as the axis; when the flipping component drives the ramp channel (16) to flip to be parallel to the side plate (19), the ejector component (20) passes through the notch (25) and abuts against the side of the workpiece away from the screening baffle (21); the workpiece flips to the vertical direction with the ramp channel (16), and the pushing force of the ejector component (20) on the top end of the workpiece causes the workpiece to flip and be output from the screening baffle (21).

2. The workpiece front and back screening fixture according to claim 1, characterized in that, When the workpiece is placed face up, along the material feeding direction, the bottom of the workpiece presents an arc-shaped structure that is high in the middle and low at both ends. When the workpiece is placed face down, the bottom of the workpiece has a flat structure.

3. The workpiece front and back screening fixture according to claim 1, characterized in that, The flipping assembly includes a flipping cylinder (17) and a cylinder support frame (18), with the output end of the flipping cylinder (17) connected to the bottom end of the ramp channel (16).

4. A workpiece screening and feeding device, characterized in that, The invention includes a workpiece front and back screening fixture as described in any one of claims 1-3.

5. The workpiece screening feeding device according to claim 4, characterized in that, It also includes a transmission line (13), a feeding component and a height limiting component; the feeding component, the height limiting component and the front and back screening fixture are arranged sequentially in the transmission line (13); the output end of the feeding component is connected to the input end of the height limiting component, and the output end of the height limiting component is connected to the input end of the front and back screening fixture.

6. The workpiece screening feeding device according to claim 5, characterized in that, It also includes a feeding frame (23), the feeding component is located above the feeding frame (23), and the feeding component is located in the track (22) at the top of the feeding frame (23), the extension direction of the track (22) is perpendicular to the transmission line (13); the feeding component includes M feeding robots (11) arranged sequentially along the transmission direction of the transmission line (13).

7. The workpiece screening feeding device according to claim 5, characterized in that, A recycling bin (24) is provided on the side of the transmission line (13). The height limiting component includes a height limiting plate (14) and a push plate (15). The height limiting plate (14) is located in the transmission line (13), and the distance between the height limiting plate (14) and the transmission line (13) is greater than the height of a single workpiece and less than the height of two workpieces. The push plate (15) and the recycling bin (24) are located on both sides of the transmission line (13).

8. A method for feeding and screening workpieces, characterized in that, include: The feeding assembly places the workpieces sequentially into the conveyor line (13); The transmission line (13) carries the workpiece to the height limit component. If the stacked workpiece cannot pass through the height limit plate (14), the push plate (15) pushes the stacked workpiece into the recycling bin (24). Ensure that the workpieces pass through the height restriction plate (14) in sequence; The transmission line (13) carries the workpiece to the top of the ramp channel (16). If the workpiece is placed face up, it can pass over the screening baffle (21) for feeding. If the workpiece is placed face down, it will be blocked by the screening baffle (21). When the workpiece is blocked by the screening baffle (21), the ejector component (20) passes through the notch (25) and abuts against the side of the workpiece away from the screening baffle (21), so that the workpiece is flipped over for feeding.

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