CN117889750A - Automatic edge finding detection device for reducing product size detection error - Google Patents
Automatic edge finding detection device for reducing product size detection error Download PDFInfo
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- CN117889750A CN117889750A CN202410298813.7A CN202410298813A CN117889750A CN 117889750 A CN117889750 A CN 117889750A CN 202410298813 A CN202410298813 A CN 202410298813A CN 117889750 A CN117889750 A CN 117889750A
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- 238000001514 detection method Methods 0.000 title claims abstract description 83
- 230000007246 mechanism Effects 0.000 claims abstract description 69
- 230000005540 biological transmission Effects 0.000 claims description 9
- 239000002184 metal Substances 0.000 abstract description 3
- 238000005530 etching Methods 0.000 description 25
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 238000013459 approach Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 238000003698 laser cutting Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The invention relates to the technical field of edge finding detection of electronic components and metal etched products, and discloses an automatic edge finding detection device for reducing the size detection error of a product, which comprises a main body, wherein a positioning plate and a differential driving mechanism are arranged on the main body, two positioning plates are arranged, and the positioning plate is abutted against the edge of the product to determine the position of the positioning plate; the differential driving mechanism is used for driving the two positioning plates to move in opposite directions at the same time, and when one positioning plate is abutted against the edge of a product, the differential driving mechanism only drives the other positioning plate to move continuously. According to the automatic edge finding detection device for reducing the product size detection error, provided by the invention, the two positioning plates are driven to move oppositely through the differential driving mechanism, the positioning plates determine the position where the positioning plates are in contact with the edges of a product, and then the differential driving mechanism continues to drive the other positioning plate to move, so that the edge positions of two sides of the product are determined through the two positioning plates.
Description
Technical Field
The invention relates to the technical field of edge finding detection of electronic components and metal etched products, in particular to an automatic edge finding detection device for reducing product size detection errors.
Background
Etching techniques, particularly electronic components, metal etched articles such as cell phone lens springs, are techniques that use chemical reactions or physical impact to remove portions of the material. Etching techniques can be classified into wet etching and dry etching. Edge finding is often required to determine the size of the product before etching the product.
If the authorized bulletin number is CN102353346B, the authorized bulletin day is 2013, 5, 8, and the patent document named "detection method and System for the CCD installation perpendicularity of automatic edge-seeking laser cutting machine" includes the following steps: directly utilizing a laser head of a laser cutting machine, and marking circular and circle center marking patterns formed by laser spots on calibration paper fixedly paved in five different areas of a working surface of a cutting bed; capturing marked images of five different areas through a CCD; respectively extracting the coordinates of the circumference and the center point of the marked image by using an image processing technology; and calculating the extreme value of the distance from the center of the circle to each point of the circumference, and calculating the perpendicularity between the CCD optical axis and the cutting bed by using a calculation model.
Most of the automatic edge finding detection devices in the prior art rely on a camera to perform image recognition so as to determine the information such as the position, the size, the verticality and the like of the edge of an etched product, and obviously, the image recognition technology has a certain error rate when the detection is performed only through a single camera, which can affect the processing precision of the etched product.
Disclosure of Invention
The present invention is directed to an automatic edge finding device for reducing product size detection errors, so as to solve the above-mentioned drawbacks in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides an automatic edge finding detection device for reducing product size detection error, includes the main part, be provided with in the main part:
the positioning plates are arranged and used for determining the positions of the positioning plates by abutting against the edges of the products;
and the differential driving mechanism is used for driving the two positioning plates to move in opposite directions at the same time, and when one positioning plate is abutted against the edge of a product, the differential driving mechanism only drives the other positioning plate to move continuously.
The automatic edge finding detection device for reducing the product size detection error is characterized in that the two positioning plates are both connected to the main body in a sliding manner.
The automatic edge searching detection device for reducing the product size detection error comprises two screw rods rotatably connected to a main body, wherein threaded grooves are formed in the two screw rods, driving rods are arranged on the positioning plates, and the driving rods are respectively located in the two threaded grooves.
The automatic edge finding detection device for reducing the product size detection error is characterized in that the differential driving mechanism further comprises a connecting piece rotationally connected to the two screw rods, a first gear is rotationally connected to the connecting piece, two second gears are fixed to opposite ends of the screw rods, the first gear is located between the two second gears and is meshed with the two second gears respectively, and the differential driving mechanism further comprises a power assembly for driving the connecting piece to rotate.
The automatic edge finding detection device for reducing the product size detection error comprises a power assembly, wherein the power assembly comprises a power motor fixed on a main body, a driving gear is fixed at the output end of the power motor, and a transmission gear meshed with the driving gear is fixed on a connecting piece.
The automatic edge finding detection device for reducing the product size detection error is characterized in that a positioning rod is arranged on the main body and is positioned between two positioning plates.
The automatic edge finding detection device for reducing the product size detection error is characterized in that the driving rod is connected to the positioning plate in a sliding mode, and a first elastic piece for forcing the positioning plate to be far away from the center of the main body is arranged between the positioning plate and the main body.
The automatic edge finding detection device for reducing the product size detection error further comprises a switching mechanism for switching the position of the driving rod.
The automatic edge finding detection device for reducing the product size detection error comprises a linkage rod arranged on a main body in a sliding mode, one end of the linkage rod is fixed with a positioning rod, a second elastic piece used for forcing the positioning rod to extend out of the main body is arranged between the linkage rod and the main body, a contact supporting rod is fixed on a driving rod, and a third elastic piece used for forcing the contact supporting rod to abut against the linkage rod is arranged between the driving rod and a positioning plate.
The automatic edge finding detection device for reducing the product size detection error further comprises a limiting mechanism, wherein after edge finding detection is completed, the limiting mechanism limits the position of the screw rod so that the driving rod corresponds to the thread groove.
In the technical scheme, the automatic edge finding detection device for reducing the product size detection error provided by the invention has the advantages that when the automatic edge finding detection device is used, the two positioning plates are positioned at two sides of a product, and then the two positioning plates are driven to move in opposite directions through the differential driving mechanism, so that the two positioning plates can synchronously move towards the middle position of the product until one positioning plate is abutted against the edge of the product, the positioning plate determines the position where the positioning plate is abutted against the edge of the product, then the differential driving mechanism stops driving the positioning plate to move and continues driving the other positioning plate to move, so that the other positioning plate is driven to be abutted against the other edge position of the product, the edge positions of the two sides of the product are determined through the two positioning plates, and the two positioning plates are mutually verified with the image pick-up mechanism and the image recognition mechanism, so that the error rate of product size detection is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic diagram of an overall structure of an automatic edge finding device for reducing product size detection errors according to an embodiment of the present invention;
FIG. 2 is a schematic view of an active cavity structure according to an embodiment of the present invention;
FIG. 3 is a schematic view of a structure of a connecting piece according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a connector according to an embodiment of the present invention;
FIG. 5 is a schematic view of a positioning rod according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of a first elastic member according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a second elastic member according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of a third elastic member according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a limiting mechanism according to an embodiment of the present invention.
Reference numerals illustrate:
1. a main body; 2. a positioning plate; 3. a chute; 4. a screw rod; 5. a thread groove; 6. a driving rod; 7. a connecting piece; 8. a first gear; 9. a second gear; 10. a power motor; 11. a drive gear; 12. a transmission gear; 13. a positioning rod; 14. a first elastic member; 15. a linkage rod; 16. a second elastic member; 17. a touch-up rod; 18. a third elastic member; 19. a rod; 20. a connection part; 21. a limiting block; 22. a limiting groove; 23. and a fourth elastic member.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
Referring to fig. 1 to 9, an embodiment of the present invention provides an automatic edge finding and detecting device for reducing a product size detection error, including a main body 1, wherein a positioning plate 2 and a differential driving mechanism are provided on the main body 1, two positioning plates 2 are provided, and the positioning plates 2 are abutted against edges of a product to determine positions of the positioning plates; the differential driving mechanism is used for driving the two positioning plates 2 to move in opposite directions at the same time, and when one positioning plate 2 is abutted against the edge of a product, the differential driving mechanism only drives the other positioning plate 2 to move continuously.
Specifically, etching is a technique of removing a part of a material using a chemical reaction or physical impact, and the etching technique can be classified into wet etching and dry etching. Before etching the product, edge finding detection is often required to determine the position, size, verticality and other information of the edge of the product; the main body 1 is further provided with a camera mechanism and an image recognition mechanism to determine the size information of the etched product (i.e. the position information of each edge of the etched product) through images, which are all in the prior art and are not described in detail. The innovation point of the embodiment of the invention is that after the camera shooting mechanism detects the size of the etched product (before), the edge of the etched product is interfered by the positioning plate 2 (structures such as a position sensor, a pressure sensor and the like can be arranged on the positioning plate 2, so that the position information of the etched product can be determined when the edge of the etched product is interfered, namely the position information of the edge of the etched product), so that the position information of the edge of the etched product, which is interfered with the positioning plate 2, is determined, and the position information is mutually verified with the camera shooting mechanism and the image recognition mechanism, so that the error rate of the size detection of the product is reduced; through setting up differential drive can drive two locating plates 2 simultaneously and remove in opposite directions (differential drive mechanism can be the combination of two sets of arms to drive two locating plates 2 respectively), drive two locating plates 2 simultaneously and remove in order to carry out position detection to the edge of etching product both sides relatively to the central point of etching product promptly, when the edge of etching product is contradicted to a locating plate 2, differential drive mechanism stops driving this locating plate 2, avoid the position of etching product to take place to remove as far as possible, differential drive mechanism continues to drive another locating plate 2 and removes afterwards, until after another locating plate 2 contradicts the edge of etching product, the position information of two locating plates 2 confirm etching product both sides relatively edge to this is accomplished through differential drive mechanism and two locating plates 2 and is sought limit detection operation.
According to the automatic edge finding detection device for reducing the product size detection error, when the automatic edge finding detection device is used, the two positioning plates 2 are located on two sides of a product, and then the two positioning plates 2 are driven to move in opposite directions through the differential driving mechanism, so that the two positioning plates 2 can synchronously move towards the middle position of the product until one positioning plate 2 is abutted against the edge of the product, the positioning plate 2 determines the position where the positioning plate 2 is abutted against the edge of the product, then the differential driving mechanism stops driving the positioning plate 2 to move and continues driving the other positioning plate 2 to move, so that the other positioning plate 2 is driven to be abutted against the other edge position of the product, the edge positions of the two opposite sides of the product are determined through the two positioning plates 2, mutual verification is performed with the camera mechanism and the image recognition mechanism, and the error rate of product size detection is reduced.
In yet another embodiment of the present invention, further, both of the positioning plates 2 are slidably connected to the main body 1. Specifically, the main body 1 is configured to be long, two sliding grooves 3 are symmetrically configured on the bottom wall (or the top wall) of the main body 1, the two sliding grooves 3 are all arranged along the length direction of the main body 1, and the two positioning plates 2 are respectively and slidably connected in the two sliding grooves 3, so that the differential driving mechanism can drive the two positioning plates 2 to move along the length direction of the main body 1, and position detection is performed on the edges of two opposite sides of an etched product. The main body 1 can be arranged on a manipulator, and the manipulator at least comprises a lifting mechanism and a rotating mechanism so as to drive the main body 1 to lift and rotate (the manipulator is in the prior art and is not repeated); the main body 1 can drive the positioning plates 2 to be close to or far away from the etched product when in lifting, and when the main body 1 rotates, the two positioning plates 2 can synchronously rotate to search the edges of two opposite sides of the etched product from different angles.
As an alternative scheme for the two groups of mechanical arms to drive the two positioning plates 2 to move respectively, preferably, the differential driving mechanism comprises two screw rods 4 rotatably connected to the main body 1, the screw rods 4 are respectively provided with a thread groove 5, the positioning plates 2 are respectively provided with a driving rod 6, and the driving rods 6 are respectively positioned in the thread grooves 5. Specifically, a movable cavity is formed in the main body 1, two screw rods 4 are both rotatably connected to the inner wall of the movable cavity, and the two screw rods 4 are both arranged along the length direction of the main body 1; the two sliding grooves 3 are communicated with the movable cavity, the driving rod 6 is positioned in the movable cavity, one end of the driving rod is arranged on the positioning plate 2, and the other end of the driving rod is positioned in the corresponding thread groove 5, so that the positioning plate 2 can be driven to slide along the sliding grooves 3 through the thread groove 5 and the driving rod 6 when the screw rod 4 rotates; the driving source of the screw rod 4 can adopt motors in the prior art, for example, two motors are arranged on the main body 1 to respectively drive the two screw rods 4 to rotate, so as to respectively drive the two positioning plates 2 to perform edge searching operation; the effect that so set up lies in, and the arm among the prior art is mostly diaxon or triaxial, in this embodiment, replaces comparatively complicated arm structure through simple lead screw 4 structure to drive locating plate 2 and seek limit operation, it is comparatively convenient.
As the above-mentioned two motors drive two lead screw 4 pivoted alternatives respectively, still further, differential actuating mechanism still includes the connecting piece 7 of rotating connection on two lead screws 4, it is connected with first gear 8 to rotate on the connecting piece 7, two second gear 9 is all fixed to the opposite end of lead screw 4, first gear 8 is in the centre of two second gears 9 and meshes with two second gears 9 respectively, differential actuating mechanism still includes the power component who is used for driving connecting piece 7 pivoted. Specifically, the two ends of the connecting piece 7 are both rotating shafts, the two rotating shafts are respectively sleeved on the two screw rods 4, so that the connecting piece 7 is simultaneously connected with the two screw rods 4 in a rotating way (the connecting position of the connecting piece 7 and the screw rods 4 is not provided with a thread groove 5), namely the connecting piece 7 is connected in the movable cavity in a rotating way through the two screw rods 4, and the main body 1, the screw rods 4 and the connecting piece 7 can rotate relatively; the middle position of the connecting piece 7 is provided with a movable groove, one ends of the two screw rods 4 opposite to each other extend into the movable groove, namely, the two second gears 9 are positioned in the movable groove, the first gears 8 are rotationally connected to the inner wall of the movable groove, and two sides of the first gears 8 are respectively meshed with the two second gears 9; the first gear 8 and the second gear 9 are preferably bevel gears so that the first gear 8 is in close mesh with both second gears 9 at the same time; the first gears 8 may be symmetrically provided with two to improve stability; the two thread grooves 5 on the two screw rods 4 are symmetrical with respect to the central position of the main body 1, so that the two positioning plates 2 are driven to move in opposite directions when the two screw rods 4 rotate in the same direction; the power assembly may employ a rotating structure in the prior art, such as a motor, and is not described herein. The effect of the arrangement is that the connecting piece 7 can be driven to rotate on the two screw rods 4 through a single power assembly, when the connecting piece 7 rotates, the first gear 8 on the inner wall of the movable groove synchronously rotates, so that the two second gears 9 can be forced to synchronously rotate through the first gear 8, the two screw rods 4 are driven to rotate in the same direction through the two second gears 9, and the two locating plates 2 are driven to move in opposite directions through the two symmetrically arranged thread grooves 5; when one positioning plate 2 is abutted against the edge of the etched product, the positioning plate 2 completes the edge finding detection operation and is abutted against the product so as not to move continuously (when the edge finding detection is carried out, the etched product is generally fixed, the deviation of the position of the etched product during the edge finding detection is avoided as much as possible), namely the screw rod 4 and the second gear 9 corresponding to the positioning plate 2 cannot rotate continuously, if the other positioning plate 2 is abutted against the edge of the other side of the etched product synchronously, the two positioning plates 2 complete the edge finding detection operation, the differential driving mechanism can stop running, and if the other positioning plate 2 is not abutted against the edge of the other side of the etched product, the differential driving mechanism continues running, as shown in fig. 2, when the left positioning plate 2 is not abutted against the edge finding operation, the right positioning plate 2 is not abutted against the edge finding operation, the connecting piece 7 rotates so as to drive the first gear 8 to rotate continuously, and the left screw rod 4 and the second gear 9 cannot rotate continuously, and therefore when the first gear 8 rotates along with the connecting piece 7, the left second gear 9 rolls and drives the right gear 9 to rotate continuously, and the differential driving mechanism moves continuously, namely the positioning plate 2 is driven to move continuously, and the differential driving mechanism moves continuously; on the contrary, when the positioning plate 2 on the right side is abutted against the edge of the product, the differential driving mechanism continues to operate and can only drive the positioning plate 2 on the left side to move. The arrangement is that the differential driving mechanism can drive the two positioning plates 2 to move towards the center of the etched product at the same time, and when one positioning plate 2 is abutted against the edge of the product to finish edge finding detection, the differential driving mechanism can stop driving the positioning plate 2 and only drive the other positioning plate 2 to continue moving, so that edge finding detection operations of different strokes of the two positioning plates 2 are adapted.
As an alternative to the above-mentioned motor directly driving the connecting member 7 to rotate, preferably, the power assembly includes a power motor 10 fixed on the main body 1, a driving gear 11 is fixed at an output end of the power motor 10, and a transmission gear 12 meshed with the driving gear 11 is fixed on the connecting member 7. Specifically, the driving gear 11 is located in the movable cavity, the driving gear 11 and the transmission gear 12 may be configured as bevel gears or friction wheels, and the transmission ratio of the driving gear 11 and the transmission gear 12 is greater than one; the effect of this arrangement is that by arranging the drive gear 11 and the transmission gear 12 between the power motor 10 and the connecting piece 7, the transmission ratio between the power motor 10 and the connecting piece 7 is greater than one, so that the driving force of the power motor 10 to the positioning plate 2 can be improved, and the power assembly is adapted to the operation of the differential driving mechanism.
In yet another embodiment of the present invention, further, a positioning rod 13 is disposed on the main body 1, and the positioning rod 13 is located between the two positioning plates 2. Specifically, the positioning rod 13 and the two positioning plates 2 are positioned on the same side of the main body 1, and the positioning rod 13 is positioned at the center of the main body 1; the positioning rod 13 and the two positioning plates 2 are arranged vertically to the main body 1, the length of the part of the positioning rod 13 protruding from the main body 1 is smaller than the length of the part of the positioning plate 2 protruding from the main body 1, namely when the main body 1 approaches to an etched product, if two opposite side edges of the etched product exceed the edge searching detection range, at least one of the two positioning plates 2 can firstly collide with the etched product, and the positioning rod 13 is not contacted with the etched product; on the contrary, if the two opposite sides of the etched product are both within the range of the edge finding detection, the positioning rod 13 will first collide with the etched product, and at this time, the two positioning plates 2 move to the two opposite sides of the etched product, and then the edge finding detection can be performed. The effect of this setting lies in, before carrying out seeking the limit detection, whether according to whether locating lever 13 contradicts etching product can confirm whether etching product's size exceeds main part 1 and seek limit detection's scope, if locating lever 13 does not contradict etching product, then indicate that two locating plates 2 are not taken one's place the both sides of etching product, can't seek the limit detection this moment, if locating lever 13 contradicts etching product, then indicate that two locating plates 2 are taken one's place, can seek the limit detection this moment, and when seeking the limit detection, can contradict etching product in order to restrict etching product's position through locating lever 13, avoid seeking the position of etching product to appear the skew in the limit detection process as far as possible.
In yet another embodiment of the present invention, further, the driving rod 6 is slidably connected to the positioning plate 2, and a first elastic member 14 for forcing the positioning plate 2 away from the center of the main body 1 is disposed between the positioning plate 2 and the main body 1. Specifically, a driving groove is formed at one end of the positioning plate 2 close to the movable cavity, the driving groove is arranged along the length direction of the positioning plate 2, a driving rod 6 is slidably connected in the driving groove to move along the length direction of the positioning plate 2, when the driving rod 6 slides along the driving groove, one end of the driving rod 6 far away from the positioning plate 2 can enter a corresponding thread groove 5 or move out of the corresponding thread groove 5 (the driving rod 6 can enter the thread groove 5 only when the angle of the thread groove 5 is proper, otherwise, the driving rod 6 can be abutted against the outer wall of the screw rod 4); the first elastic member 14 is in a compressed state, and may be a spring or an elastic telescopic rod, as shown in fig. 6, which is a spring in a compressed state (the position of the spring is easy to deviate when the spring is in a compressed state, for this purpose, a connecting groove may be formed at the connection position of the sliding chute 3 and the movable cavity, and the connecting groove is arranged along the length direction of the main body 1, so that the first elastic member 14 is guided and limited while the movement of the positioning plate 2 is not affected, which is not described in detail in the prior art), so that the positioning plate 2 is forced to move to one end of the sliding chute 3 far from the center of the main body 1 by the first elastic member 14. The effect of this setting is that, after the locating plate 2 finishes the edge searching operation, the differential driving mechanism can drive the two locating plates 2 to reset to the position far away from the center of the main body 1 through the reverse operation, but the time required by this mode is longer, therefore, the driving groove and the first elastic piece 14 are provided, after the locating plate 2 finishes the edge searching operation, the driving rod 6 is retracted into the driving groove, and the driving rod 6 can be moved out from the corresponding thread groove 5, thereby, the driving of the driving rod 6 and the locating plate 2 by the screw rod 4 is released, the locating plate 2 and the driving rod 6 can reset to one end of the chute 3 far away from the center of the main body 1 under the elastic action of the first elastic piece 14, and the time required by the resetting of the locating plate 2 is reduced; on the contrary, when the driving rod 6 extends out from the driving groove, the driving rod 6 can enter the corresponding screw groove 5 (if the angle of the screw groove 5 does not correspond to the driving rod 6, the driving rod 6 can enter the screw groove 5 after the differential driving mechanism drives the screw rod 4 to rotate a certain angle), so that the positioning plate 2 is driven by the screw rod 4 to perform edge searching detection.
It should be noted that, when the differential driving mechanism drives the two positioning plates 2 to perform edge searching detection, the positioning plates 2 approach the center of the main body 1 along the chute 3, and in this process, the positioning plates 2 are continuously subject to the elastic force of the first elastic member 14, but the elastic force does not affect the adapting operation of the driving rod 6 and the thread groove 5, that is, the elastic force of the first elastic member 14 does not force the driving rod 6 to separate from the thread groove 5.
Still further, a switching mechanism for switching the position of the drive lever 6 is also included. Specifically, the switching mechanism may be a linear driving structure disposed on the positioning plate 2, so that the driving rod 6 is driven to be retracted into the driving slot or extend out of the driving slot by the linear driving structure, such as an electric push rod structure, so that the driving rod 6 can be driven to be separated from the corresponding thread slot 5 or enter the corresponding thread slot 5.
Preferably, the switching mechanism comprises a linkage rod 15 slidably arranged on the main body 1, one end of the linkage rod 15 is fixed with the positioning rod 13, a second elastic piece 16 for forcing the positioning rod 13 to extend out of the main body 1 is arranged between the linkage rod 15 and the main body 1, an abutting rod 17 is fixed on the driving rod 6, and a third elastic piece 18 for forcing the abutting rod 17 to abut against the linkage rod 15 is arranged between the driving rod 6 and the positioning plate 2. Specifically, a plurality of jacks are formed in the movable cavity, the jacks are arranged along the length direction of the positioning plate 2, the linkage rod 15 is arranged along the length direction of the screw rod 4, a plurality of inserting rods 19 are fixed on the linkage rod 15, and the inserting rods 19 are respectively inserted into the corresponding jacks, so that the linkage rod 15 can slide along the jacks through the inserting rods 19; the main body 1 is provided with a through hole communicated with the movable cavity, and the positioning rod 13 is arranged in the through hole in a penetrating way; one end of the linkage rod 15 is provided with a connecting part 20, and the connecting part 20 is used for connecting the positioning rod 13 and the linkage rod 15 (the length and the angle of the connecting part 20 are set according to the situation so as to avoid interference with other structure operations), so that the linkage rod 15 and the positioning rod 13 can synchronously move along the length direction of the positioning plate 2; the two sides of the main body 1 are correspondingly provided with linkage rods 15, the two linkage rods 15 are rotationally symmetrical about the center of the main body 1, and two connecting parts 20 are fixed on the positioning rod 13 to connect the two linkage rods 15; the second elastic member 16 is in a compressed state, and may adopt a spring or an elastic telescopic rod structure, as shown in fig. 7, the second elastic member 16 is a spring disposed in the jack, that is, the second elastic members 16 are disposed in the plurality of jacks, so that the linkage rod 15 is forced to move by the plurality of second elastic members 16 and drives the positioning rod 13 to extend out of the main body 1 along the through hole; the driving rod 6 and the driving groove are constructed as non-revolving bodies which are mutually matched, the abutting rod 17 is vertically fixed on one side of the driving rod 6 close to the linkage rod 15, the third elastic piece 18 is in a compressed state and can adopt a spring or elastic telescopic rod structure, as shown in fig. 8, the third elastic piece 18 is a spring arranged in the driving groove, and therefore the driving rod 6 is forced into the corresponding thread groove 5 through the third elastic piece 18; the elastic force of the second elastic piece 16 is larger than that of the third elastic piece 18, when the second elastic piece 16 forces the positioning rod 13 to extend out of the main body 1, the third elastic piece 18 can only force the abutting rod 17 to abut against the linkage rod 15 and cannot enter the corresponding threaded groove 5, when the positioning rod 13 receives external force along the penetrating groove to retract into the movable cavity, the linkage rod 15 integrally presses the second elastic piece 16 along the insertion hole, and at the moment, the linkage rod 15 does not block the abutting rod 17 any more, so that the driving rod 6 can enter the corresponding threaded groove 5 under the action of the third elastic piece 18.
The effect of the arrangement is that when the main body 1 is idle (i.e. edge finding is not performed), the second elastic piece 16 can drive the positioning rod 13 to extend out of the main body 1 along the through hole, meanwhile, the linkage rod 15 and the contact rod 17 drive the driving rod 6 to be separated from the corresponding thread groove 5, and at the moment, the differential driving mechanism cannot drive the positioning plate 2 to move through the screw rod 4, so that the positioning plate 2 is positioned at one end of the chute 3 far away from the center of the main body 1 under the effect of the first elastic piece 14; when edge finding detection is carried out, the main body 1 approaches to an etched product until the positioning rod 13 is abutted against the etched product, the positioning rod 13 receives an abutting force and is retracted into the movable cavity along the through hole, at the moment, the positioning rod 13 and the linkage rod 15 overcome the elastic force of the second elastic piece 16 and move along the jack, so that the linkage rod 15 does not block the abutting rod 17 any more, and the driving rod 6 can extend out of the driving groove and enter the corresponding thread groove 5 under the action of the third elastic piece 18, namely, after the positioning rod 13 abuts against the etched product, the differential driving mechanism can drive the positioning plate 2 so as to drive the positioning plate 2 to carry out edge finding detection; after the two positioning plates 2 are subjected to edge searching operation, the two positioning plates 2 respectively abut against two opposite side edges of an etched product, at this time, the two positioning plates 2 have certain clamping effect on the etched product, so that the main body 1 is convenient to reset, the power assembly is reversely operated to drive the two positioning plates 2 to be slightly away from the central position of the main body 1, then the main body 1 is directly driven to be away from the etched product, at this time, the positioning rod 13 loses the abutting of the etched product and stretches out of the main body 1 under the action of the second elastic piece 16, and meanwhile, the second elastic piece 16 drives the linkage rod 15 to reset to abut against the contact rod 17, so that the driving rod 6 overcomes the elasticity of the third elastic piece 18 and is retracted into the driving groove, the driving rod 6 is separated from the corresponding thread groove 5, and then the positioning plates 2 are directly reset to one end of the sliding groove 3 away from the center of the main body 1 under the action of the first elastic piece 14 (during edge searching detection of the positioning plates 2, the contact rod 17 moves synchronously along with the driving rod 6), and the contact rod 17 is arranged along the length direction of the screw rod 4, so that after the edge searching detection is finished, the positioning plates 2 can overcome the elasticity of the third elastic piece 18 and the corresponding thread groove is extruded, and the contact rod 17 can be conveniently extruded and the corresponding position of the sliding rod 17 is located under the position of the corresponding position of the driving rod 5.
Because the distance that differential actuating mechanism drive locating plate 2 moved is according to etching product's edge position to the number of turns of lead screw 4 at every turn all uncertainty for lead screw 4 all perhaps appears rotating half circle's phenomenon promptly, when seeking limit detection next time, locating lever 13 income main part 1, actuating lever 6 can not directly get into corresponding screw thread groove 5, namely actuating lever 6 can conflict on lead screw 4 outer wall, after differential actuating mechanism drives lead screw 4 rotation certain angle, the position of screw thread groove 5 just corresponds with actuating lever 6, and actuating lever 6 can get into screw thread groove 5 and receive the drive of lead screw 4 under the effect of third elastic component 18 this moment. In another embodiment provided by the invention, the device further comprises a limiting mechanism, and after the edge searching detection is completed, the limiting mechanism limits the position of the screw rod 4 so that the driving rod 6 corresponds to the thread groove 5. Specifically, the limiting mechanism can select the combination of electric putter and fixture block, limit lead screw 4 or second gear 9 through electric putter control fixture block for locating plate 2 resets to the one end that spout 3 kept away from main part 1 center after, actuating lever 6 can correspond with thread groove 5, so that locating lever 13 income main part 1 after, actuating lever 6 can directly get into corresponding thread groove 5.
Preferably, the limiting mechanism includes a limiting block 21 provided on the link lever 15 and a limiting groove 22 configured on the screw 4. Specifically, the limiting block 21 is located at one side of the screw rod 4 far away from the positioning rod 13, a fourth elastic piece 23 in a stretching state is arranged between the limiting block 21 and the linkage rod 15, and the fourth elastic piece 23 can be an elastic telescopic rod so as to drive the limiting block 21 to be close to the linkage rod 15 through the fourth elastic piece 23; the elastic force of the second elastic member 16 is greater than the sum of the elastic forces of the third elastic member 18 and the fourth elastic member 23; a limiting groove 22 is formed on the screw rod 4 and is positioned on one side of the thread groove 5 close to the second gear 9; when the positioning rod 13 is collided and received in the movable cavity, the linkage rod 15 and the limiting block 21 synchronously move, so that the limiting block 21 moves to one side of the screw rod 4 and is not contacted with the outer wall of the screw rod 4, and the limiting block 21 is prevented from influencing the rotation of the screw rod 4 as much as possible; when the positioning rod 13 loses the conflict, the second elastic piece 16 forces the positioning rod 13 to extend out of the main body 1, the limiting block 21 and the linkage rod 15 synchronously move, if the limiting block 21 does not correspond to the position of the limiting groove 22, the limiting block 21 can conflict with the outer wall of the screw rod 4 and stretch the fourth elastic piece 23 until the screw rod 4 rotates to a specific angle, and after the screw rod 4 rotates to a specific angle, the positions of the limiting block 21 and the limiting groove 22 correspond to each other, so that the fourth elastic piece 23 can directly pull the limiting block 21 into the limiting groove 22, and the screw rod 4 is limited to rotate, and the position of the driving rod 6 exactly corresponds to the thread groove 5; when the main body 1 is reset, the power assembly needs to reversely run to drive the two positioning plates 2 to slightly depart from the central position of the main body 1 so as to avoid the interference between the positioning plates 2 and the edge of the etching product, after the main body 1 is far away from the etching product, the positioning rod 13 is separated from the etching product, the power assembly reversely run can drive the screw rod 4 to reversely rotate, at the moment, the positioning rod 13, the linkage rod 15 and the limiting block 21 are acted by the second elastic piece 16 so as to enable the limiting block 21 to be interfered on the outer wall of the screw rod 4 until the power assembly drives the screw rod 4 to rotate to a specific angle, and the positions of the limiting groove 22 and the limiting block 21 correspond to each other, so that the second elastic piece 16 drives the limiting block 21 to be inserted into the limiting groove 22, and at the moment, the positioning rod 13 also completely extends out of the main body 1. In the process of resetting the main body 1, the reverse running power assembly has the effects that firstly, the positioning plate 2 is driven to be slightly far away from the center of the main body 1, so that the positioning plate 2 is prevented from clamping an etching product, and the resetting of the main body 1 is prevented from being influenced; secondly, the positioning plate 2 is driven to reset for a certain distance, so that the positioning plate 2 is conveniently and directly driven to move to one end of the chute 3 far away from the center of the main body 1 through the first elastic piece 14; thirdly, when the power assembly runs reversely, if the limiting block 21 does not correspond to the position of the limiting groove 22, the limiting block 21 can be abutted against the outer wall of the screw rod 4 and stretch the fourth elastic piece 23 until the screw rod 4 rotates to a specific angle, and then the limiting block 21 can be inserted into the corresponding limiting groove 22 under the action of the fourth elastic piece 23, so that the corresponding screw rod 4 is limited, the thread groove 5 on the screw rod 4 corresponds to the driving rod 6, and the driving rod 6 can directly enter the thread groove 5 when extending out of the driving groove; fourth, after the positioning rod 13 extends out of the main body 1, if both the two limiting blocks 21 do not correspond to the corresponding limiting grooves 22, the power assembly reversely operates to enable one limiting block 21 to enter the corresponding limiting groove 22 to lock one screw rod 4, after one screw rod 4 is locked, the power assembly continues reversely operating to drive the other screw rod 4 to rotate until both screw rods 4 are locked, and then the power assembly stops operating, so that the reset operation of the main body 1 is completed.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (10)
1. The utility model provides an automatic edge finding detection device for reducing product size detection error, includes the main part, its characterized in that is provided with in the main part:
the positioning plates are arranged and used for determining the positions of the positioning plates by abutting against the edges of the products;
and the differential driving mechanism is used for driving the two positioning plates to move in opposite directions at the same time, and when one positioning plate is abutted against the edge of a product, the other positioning plate is driven to move continuously by the differential driving mechanism.
2. The automatic edge finding device according to claim 1, wherein both of the positioning plates are slidably connected to the main body.
3. The automatic edge finding detection device according to claim 2, wherein the differential driving mechanism comprises two screw rods rotatably connected to the main body, screw grooves are formed in the two screw rods, driving rods are arranged on the two positioning plates, and the two driving rods are respectively located in the two screw grooves.
4. The automatic edge finding device according to claim 3, wherein the differential driving mechanism further comprises a connecting piece rotatably connected to the two screw rods, a first gear is rotatably connected to the connecting piece, second gears are fixed to opposite ends of the two screw rods, the first gear is located between the two second gears and is meshed with the two second gears respectively, and the differential driving mechanism further comprises a power assembly for driving the connecting piece to rotate.
5. The automatic edge finding detection device according to claim 4, wherein the power assembly comprises a power motor fixed on the main body, a driving gear is fixed at an output end of the power motor, and a transmission gear meshed with the driving gear is fixed on the connecting piece.
6. The automatic edge finding detection device according to claim 3, wherein a positioning rod is arranged on the main body, and the positioning rod is positioned between the two positioning plates.
7. The automatic edge finding detection device according to claim 3, wherein the driving rod is slidably connected to the positioning plate, and a first elastic member for forcing the positioning plate away from the center of the main body is disposed between the positioning plate and the main body.
8. The automatic edge finding detecting device according to claim 6, further comprising a switching mechanism for switching a position of the driving lever.
9. The automatic edge finding detection device according to claim 8, wherein the switching mechanism comprises a linkage rod slidingly arranged on the main body, one end of the linkage rod is fixed with the positioning rod, a second elastic piece for forcing the positioning rod to extend out of the main body is arranged between the linkage rod and the main body, a contact supporting rod is fixed on the driving rod, and a third elastic piece for forcing the contact supporting rod to contact the linkage rod is arranged between the driving rod and the positioning plate.
10. The automatic edge finding detecting device according to claim 3, further comprising a restricting mechanism that restricts a position of the screw rod so that the driving rod corresponds to the screw groove after the edge finding detection is completed.
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| CN117889750B (en) | 2024-05-14 |
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