Automatic inspection equipment for plate products

Abstract

The present invention discloses an automatic inspection device for plate-like products, including a conveying device, on which a plurality of inspection stations are arranged; a flipping device is also arranged on the conveying device, and the flipping device is used as a boundary to define a front inspection area for products and a back inspection area for products on the conveying device; and a rotating variable-pitch gripping mechanism for changing the direction of the plate-like products and the distance between two adjacent plate-like products is also included, the rotating variable-pitch gripping mechanism is arranged at least corresponding to the inlet end of the conveying device, and the rotating variable-pitch gripping mechanism has a gripping part, which is driven to move at least along the X-axis, the Y-axis and the Z-axis. Both the front and back sides of the plate-like products are inspected, which can ensure the comprehensiveness of the inspection; the rotating variable-pitch gripping mechanism can change the direction of the plate-like products and / or the distance between two adjacent plate-like products, which can not only increase the versatility of inspecting the plate-like products, but also avoid manual adjustment of the position of the plate-like products, and realize full automation.

Description

Technical Field

[0001] The present invention relates to the technical field of automated detection, and in particular to an automatic detection device for plate-shaped products. Background Art

[0002] The plate-like products in the prior art involve a wide range of fields, such as PCB boards, battery covers, etc. Generally, the plate-like products need to pass a testing step before use to ensure the quality and reliability of subsequent products.

[0003] Taking the battery cover 6 as an example, the battery cover 6 is an explosion-proof cover mainly used to prevent excessive pressure inside the battery, such as Fig.12 As shown, it includes a top cover sheet, poles (upper pole 61, lower pole 64), mounting hole 62, sealing ring 63, injection hole, etc. To ensure the safety of the battery, before using the battery cover 6, it is necessary to inspect the explosion-proof valve 65, injection hole 66, metal surface flatness, protective film 67, pole front side, lower plastic 68 flatness height, lower plastic 68 distance from the metal surface, metal wire, etc. of the battery cover 6.

[0004] In the prior art, on the one hand, there is a lack of solutions for conducting all-round and all-type inspections of battery cover plates for appearance defects and process quality; on the other hand, since there are many types of battery cover plates and their lengths and widths vary greatly, the problem of universality is also a difficult problem that needs to be overcome in the process of inspecting battery cover plates.

[0005] Therefore, how to solve the above-mentioned deficiencies in the prior art has become a subject to be studied and solved by the present invention. Summary of the invention

[0006] The object of the present invention is to provide an automatic inspection device for plate-shaped products.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] An automatic inspection device for plate-shaped products comprises a conveying device, on which a plurality of inspection stations are arranged;

[0009] The conveying device is also provided with a turning device for turning over the plate-shaped product, and the turning device is used as a boundary to define a front detection area of ​​the product and a back detection area of ​​the product on the conveying device, and at least one detection station is provided in each detection area;

[0010] It also includes a rotating variable-distance grabbing mechanism for changing the direction of the plate-like product and the distance between two adjacent plate-like products. The rotating variable-distance grabbing mechanism is at least arranged corresponding to the inlet end of the conveying device. The rotating variable-distance grabbing mechanism has a grabbing part, which can be driven to move at least along the X-axis, Y-axis and Z-axis, wherein the direction of the X-axis is the conveying direction of the product in the conveying device.

[0011] According to a further technical solution, the rotating variable-pitch grasping mechanism comprises a rotating module, a variable-pitch module positioned and connected to the rotating module, and a plurality of grasping parts positioned and connected to the variable-pitch module;

[0012] The variable distance module drives the horizontal distance between two adjacent grasping parts to change, and the rotating module drives the variable distance module to rotate around the Z axis.

[0013] According to a further technical solution, the pitch-changing module comprises a base frame, a pitch-changing plate and a connecting block;

[0014] The pitch-variable plate is driven to move along the Z-axis direction, and the pitch-variable plate has a plurality of inclined grooves, and the plurality of inclined grooves are in a radial shape with one end gathered and the other end diffused;

[0015] The base frame also has a slide rail extending in the horizontal direction, and a plurality of connecting blocks are slidably arranged on the slide rail, and each of the connecting blocks is slidably arranged in the inclined groove in a one-to-one correspondence;

[0016] Each of the connecting blocks is connected to the grabbing portion.

[0017] According to a further technical solution, the base frame has a sliding groove extending along the Z-axis direction, and the variable pitch plate is slidably arranged in the sliding groove.

[0018] According to a further technical solution, the inclined grooves are arranged in pairs and are symmetrical with respect to a center line of the pitch variable plate in the Z-axis direction, and projection heights of the plurality of inclined grooves in the Z-axis direction are the same.

[0019] According to a further technical solution, the inclined groove closer to the center line is relatively steeper.

[0020] According to a further technical solution, the number of the inclined grooves is four, and in the two inclined grooves on one side of the center line, the angle between the inclined groove relatively close to the center line and the center line is α, and the angle between the inclined groove relatively far from the center line and the center line is β, and the angle α is smaller than the angle β.

[0021] According to a further technical solution, the connecting block has a first sliding end and a second sliding end, the first sliding end is slidably disposed on the slide rail, the second sliding end is slidably disposed in the inclined groove, and the first sliding end and the second sliding end have the same horizontal movement tendency.

[0022] According to a further technical solution, the turning device comprises a frame and at least two turning discs, each of which is connected by a connecting shaft and is rotatably positioned on the frame;

[0023] Each of the flipping discs has a plurality of flipping stations evenly distributed along the circumference of the flipping disc, and the flipping stations of adjacent flipping discs are arranged one by one in the axial direction of the connecting shaft.

[0024] In a further technical solution, the turning device has a feed turning port and a discharge turning port, both of which are located on the horizontal plane where the conveying device is located, the feed turning port is used to clamp the plate-like product in a front posture that needs to be turned over, and the discharge turning port is used to release the turned over plate-like product as the conveying device conveys. As the turning disc rotates, the turning stations of each turning disc are alternately switched between the feed turning port and the discharge turning port in turn.

[0025] According to a further technical solution, each of the flipping stations is provided with a clamping structure, and each of the clamping structures has a limiting slot for limiting the position of the plate-like product.

[0026] According to a further technical solution, the clamping structure is arranged in the flipping station along the radial direction of the flipping disk, and the radial position of the clamping structure is adjusted according to the width of the plate-like product.

[0027] According to a further technical solution, the flip plate is movable along the axial direction of the connecting shaft, and the distance between two adjacent flip plates is adjusted according to the length of the plate-like product.

[0028] According to a further technical solution, the connecting shaft comprises a flat screw.

[0029] According to a further technical solution, there are two flipping devices, namely a first flipping device and a second flipping device, and the first flipping device is used as a boundary to define that the conveying device has a front detection area and a back detection area in sequence along the X-axis direction, and the second flipping device is located at the end of the back detection area.

[0030] A further technical solution further includes a group of centering and positioning devices relatively arranged on both sides of the conveying device, each of the centering and positioning devices includes a second clamping portion and a group of first clamping portions relatively arranged along the X-axis direction, and the two second clamping portions in the centering and positioning devices arranged in pairs are relatively arranged along the Y-axis direction;

[0031] The two first clamping parts in each of the centering and positioning devices are driven to move toward or away from each other along the X-axis direction, and limit the two sides of the product end in the X-axis direction;

[0032] The two second clamping parts in the two centering and positioning devices are driven to move toward or away from each other along the Y-axis direction, and limit the two ends of the product in the Y-axis direction.

[0033] According to a further technical solution, each of the first clamping parts is also positioned and connected with an inclined portion, and a rolling portion is rollingly arranged on the inclined surface of each of the inclined portions. The rolling portion is driven to move along the Y-axis direction and rolls on the inclined surface of the inclined portion at the same time, squeezing the two inclined portions and driving the two first clamping parts to approach each other in the X-axis direction.

[0034] According to a further technical solution, the inclined surfaces of the two inclined portions are axially symmetrically distributed along the center line of the centering and positioning device in the Y-axis direction, and the planes where the inclined surfaces are located intersect with the center line.

[0035] A further technical solution is that the driving structure drives the mounting seat of the rolling part to move in the Y-axis direction, and the outer end of the second clamping part is directly or indirectly connected to the mounting seat, so that the second clamping part is driven to move in the Y-axis direction through the Y-axis movement of the mounting seat; at the same time, the rolling part drives the first clamping part to move in the X-axis direction through the inclined portion, thereby achieving the limit clamping of the plate-like product in the X-axis and Y-axis directions by the first clamping part and the second clamping part through the drive of the same driving structure.

[0036] According to a further technical solution, each centering and positioning device further comprises a sliding guide rail, which is arranged along the X-axis, and the first clamping portion is slidably arranged on the sliding guide rail.

[0037] A further technical solution also includes a first elastic member, which acts on the first clamping parts to keep the two first clamping parts in an opening movement trend.

[0038] A further technical solution also includes a second elastic member, which acts between the mounting seat of the rolling part and the second clamping part, and keeps the mounting seat of the rolling part moving away from the second clamping part.

[0039] According to a further technical solution, the centering and positioning device is at least arranged at the rear end of the flipping device on the conveying device.

[0040] A further technical solution also includes an empty tray return device, the empty tray return device having a collecting end, a stacking end and a conveying mechanism connected therebetween;

[0041] The collecting end is arranged corresponding to the inlet end, and the stacking end is arranged corresponding to the outlet end of the conveying device;

[0042] The empty tray is conveyed to the palletizing end by the conveying mechanism;

[0043] The plate-shaped product that has been inspected is placed on the empty tray at the stacking end through a rotating variable-distance grabbing mechanism.

[0044] According to a further technical solution, the conveying mechanism is divided into a first conveying mechanism and a second conveying mechanism, the head end of the first conveying mechanism is arranged corresponding to the collecting end, the tail end of the second conveying mechanism is arranged corresponding to the stacking end, and the tail end of the first conveying mechanism is connected to the head end of the second conveying mechanism;

[0045] The first conveying mechanism performs a conveying action by being driven by a first driving unit, and the second conveying mechanism performs a conveying action by being driven by a second driving unit.

[0046] According to a further technical solution, the plate-shaped product includes a battery cover.

[0047] The terms used herein are only for describing specific embodiments and are not intended to be limiting of the present invention. Singular forms such as "a", "this", "here", "this" and "the" as used herein also include plural forms.

[0048] The terms “first”, “second”, “third”, etc. used in this document do not specifically refer to an order or sequence, nor are they used to limit the present case. They are only used to distinguish components or operations described with the same technical terms.

[0049] As used herein, “connected” or “positioned” may refer to two or more components or devices being in direct physical contact with each other, or being in indirect physical contact with each other, or may refer to two or more components or devices operating or moving with each other.

[0050] The terms “include,” “including,” “have,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0051] The terms used in this document generally have the ordinary meaning of each term used in this field, in the context of the case and in the specific context, unless otherwise noted. Certain terms used to describe the present invention will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present invention.

[0052] The terms "front", "back", "up", "down", "left", "right", etc. used in this article are all directional terms. In this case, they are only used to illustrate the positional relationship between the various structures, and are not used to limit the protection plan of this case and the specific direction during actual implementation.

[0053] The working principle and advantages of the present invention are as follows:

[0054] 1. The flipping device is used to flip the plate-like product over, so that the detection device can detect both the front and back sides of the plate-like product, ensuring the comprehensiveness of the detection of the plate-like product. Specifically, the flipping disk of the flipping device has multiple flipping stations. As the flipping disk rotates, the time interval between two adjacent flipping stations moving to the product conveying plane is small, which can ensure the flipping efficiency; in addition, through the application of the flipping device of the present invention, the online flipping of the automated production line can be realized, avoiding the shutdown of the production line during the product flipping process, thereby improving the overall efficiency of the production line; wherein, the product conveying plane is the plane where the plate-like product is conveyed and detected;

[0055] A further advantage is that each flipping station is provided with a clamping structure for clamping the plate-like product, and the clamping structure can move radially, so that the radial position of the clamping structure can be adjusted; and the flipping plate can move axially along the connecting shaft, so that the distance between two adjacent flipping plates can be adjusted; therefore, the flipping device can be suitable for plate-like products with different lengths or widths, and has better versatility.

[0056] 2. By setting a rotating variable-pitch grasping mechanism, including a rotating module and a variable-pitch module that are positioned and connected, the rotating module can be driven to move along the X-axis and the Y-axis, and the rotating module can drive the variable-pitch module to rotate around the Z-axis, so that the position of the grasping part can be flexibly adjusted, which is suitable for grasping products in different positions;

[0057] The pitch-variable plate of the pitch-variable module has multiple inclined slots, and the grabbing part is positioned and connected to the pitch-variable plate through the inclined slots. When the pitch-variable plate is displaced along the Z axis, the inclined edges of each inclined slot guide and drive the grabbing part to move horizontally to change the horizontal distance between two adjacent grabbing parts, thereby grabbing multiple products at one time according to the distribution of the products, thereby improving the grabbing efficiency;

[0058] For plate-like products at different positions, the rotating variable-distance grabbing mechanism can change the direction of the plate-like products and / or the distance between two adjacent plate-like products, so that the plate-like products reach the appropriate position on the conveying device for inspection. On the one hand, it can increase the versatility of inspecting plate-like products (meeting the inspection requirements of plate-like products at different positions). On the other hand, it can also avoid manual adjustment of the position of the plate-like products and realize full automation.

[0059] 3. Furthermore, a centering positioning device may be provided, including a second clamping portion for clamping and positioning the two ends of the plate-like product in the Y-axis direction, and a first clamping portion for clamping and positioning the two sides of the plate-like product in the X-axis direction. The first clamping portion and the second clamping portion may be driven by the same driving structure to simultaneously realize clamping and positioning of the plate-like product in two directions. On the one hand, by integrating the clamping portions for positioning in two directions into one positioning device, space can be saved; on the other hand, when performing the centering positioning action, the positioning in both the X-axis and Y-axis directions can be completed by performing one driving action through the same driving mechanism, which helps to improve the overall rhythm of automated production and thus improve production efficiency.

[0060] In summary, the present invention provides an automatic inspection equipment for plate-like products. In view of the characteristics of plate-like products such as battery covers, a plurality of inspection stations are set up, and a flipping device for turning over the plate-like products and a rotating variable-distance grasping mechanism for grabbing plate-like products of different specifications and adjusting their positions are set up. This solves the problem of detecting all-round and all kinds of appearance defects of plate-like products, while meeting the problem of universal inspection of products of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Attached Figure 1 A three-dimensional structural diagram of an automatic plate-shaped product detection device according to an embodiment of the present invention;

[0062] Attached Figure 2 A top view of an automatic plate-shaped product detection device according to an embodiment of the present invention;

[0063] Attached Figure 3 A schematic diagram of the arrangement relationship between the rotating variable-distance grabbing mechanism and the bracket according to an embodiment of the present invention;

[0064] Attached Figure 4 It is a schematic diagram of the structure of a rotating variable-distance grabbing mechanism according to an embodiment of the present invention;

[0065] Attached Figure 5 A schematic diagram of a variable pitch module according to an embodiment of the present invention;

[0066] Attached Figure 6 A schematic diagram of a transmission device according to an embodiment of the present invention;

[0067] Attached Figure 7 A schematic diagram of the structure of a flipping device according to an embodiment of the present invention;

[0068] Attached Figure 8 This is a schematic diagram of the distribution state of the centering and positioning device and the flipping device according to an embodiment of the present invention;

[0069] Attached Fig. 9 A top view of the distribution state of the centering and positioning device and the flipping device according to an embodiment of the present invention;

[0070] Attached Fig.10 It is a front view of the distribution state of the centering and positioning device and the flipping device according to an embodiment of the present invention;

[0071] Attached Fig.11 This is a schematic structural diagram of a centering and positioning device according to an embodiment of the present invention;

[0072] Attached Fig.12 The present invention is a schematic structural diagram of a battery cover.

[0073] In the above attached figure:

[0074] 1-center line; 5-centering positioning device; 6-battery cover; 7-empty tray;

[0075] 12-rotating variable-pitch grabbing mechanism; 111-first guide rail; 112-second guide rail;

[0076] 121-rotation module; 122-pitch-variable module; 123-grasping part; 1221-base frame; 1222-pitch-variable plate; 1223-connecting block; 12211-slide rail; 12212-slide slot; 12221-oblique slot;

[0077] 21-entrance end; 22-exit end; 23-transmission device; 24-turning device; 25-detection station; 231-front detection area; 232-back detection area;

[0078] 240-frame; 241-turning plate; 242-connecting shaft; 24a-first turning device; 24b-second turning device; 2411-turning station; 2412-clamping structure;

[0079] 31-collecting end; 32-palletizing end; 33-transmission mechanism; 331-first transmission mechanism; 332-second transmission mechanism;

[0080] 51-first clamping portion; 52-second clamping portion; 53-inclined portion; 54-rolling portion; 55-second elastic member; 56-sliding guide rail;

[0081] 61-upper pole; 62-mounting hole; 63-sealing ring; 64-lower pole; 65-explosion-proof valve; 66-liquid injection hole; 67-protective film; 68-lower plastic. DETAILED DESCRIPTION

[0082] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0083] Embodiment: The present invention will be clearly described below with diagrams and detailed descriptions. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0084] like Figure 1 and Figure 2 As shown, in order to solve the problem of low versatility of detection equipment for plate-like products in the prior art due to the large number of types of plate-like products, large changes in length and width, and various position and placement specifications, the present invention provides an automatic detection equipment for plate-like products, which is used to detect the appearance and structure and other features of plate-like products, including a conveying device 23, on which a plurality of detection stations 25 are arranged; the conveying device 23 is also provided with a flipping device 24 for turning over the plate-like product, and the flipping device 24 is used as a boundary to define a front detection area for the product and a back detection area for the product on the conveying device 23, and at least one detection station 25 is arranged in each detection area, so that both the front and back sides of the plate-like product can be detected, and those skilled in the art can set detection stations 25 in the front detection area and the back detection area according to the detection requirements of the plate-like product.

[0085] Among them, the specific forms of the plate-like product of this embodiment include various types, such as a PCB board, a battery cover plate 6, etc. For the sake of ease of explanation, the plate-like product of the present invention will be introduced below taking the battery cover plate 6 as an example.

[0086] Optionally, the above-mentioned inspection station 25 can be a station where a detection device is placed. For example, the detection device may include a visual module, which can detect whether the blue film of the battery cover 6 covers the explosion-proof valve, detect whether there is dirt and defects on a circle of the pole, detect whether the diameter of the injection hole meets the specifications and whether there are burrs. The above-mentioned detection devices are existing technologies commonly used in the process of detecting the battery cover 6, and will not be repeated in this embodiment; another optional method, the above-mentioned inspection station 25 can also be manual inspection, such as identifying obvious dirt and defects on the surface of the battery cover 6 by human eyes.

[0087] Further, such as Figures 3-5 As shown, the automatic inspection equipment for plate-like products in this embodiment also includes a rotating variable-pitch grasping mechanism 12 for changing the direction of the plate-like products and the distance between two adjacent plate-like products. The rotating variable-pitch grasping mechanism 12 is arranged at least corresponding to the inlet end 21 of the conveying device 23. In this embodiment, the rotating variable-pitch grasping mechanism 12 is arranged at the inlet end 21 and the outlet end 22 of the conveying device 23, and is used to grasp the products to be inspected onto the conveying device 23, and to grasp the inspected products for loading onto a tray or entering downstream equipment.

[0088] The rotating variable-pitch grasping mechanism 12 includes a rotating module 121, a variable-pitch module 122 and a plurality of grasping parts 123. The rotating module 121 is positioned and connected to the variable-pitch module 122. The rotating module 121 is driven to move at least along the X-axis, the Y-axis and the Z-axis. The variable-pitch module 122 has a plurality of inclined grooves 12221, each of which is positioned and connected to a grasping part 123. The variable-pitch module 122 can be driven to move along the Z-axis or rotate around the Z-axis. Each inclined groove 12221 guides and drives the horizontal distance between two adjacent grasping parts 123 to change. By means of the rotating variable-distance grasping mechanism 12 provided in this embodiment, the grasping portion 123 can be moved along the X-axis, the Y-axis and the Z-axis, and can be rotated around the Z-axis, so that products in different positions can be grasped. For example, some products are placed horizontally, while other products are placed vertically, and all of them can be grasped by this mechanism; further, the variable-distance module 122 can change the distance between two adjacent grasping portions 123, so that products with specific placement specifications can be grasped and placed without being affected by the position of the products.

[0089] Optionally, the rotating module 121 can be a rotating motor, or a mechanism capable of driving rotation, such as a rotating cylinder. Since its structure and principle are prior arts and are not the invention of this case, technicians in this field can flexibly choose according to specific requirements, so it will not be elaborated in this case.

[0090] The rotary variable-pitch grasping mechanism 12 in this embodiment can be used to grasp and place products in different devices. Taking the detection device of the battery cover 6 as an example, the rotary variable-pitch grasping mechanism 12 can be placed at the entrance and exit of the detection device to place the product to be detected in the detection device, and then take out the product after the detection.

[0091] Optionally, the gripping portion 123 is a suction cup.

[0092] On the one hand, since the positions of the multiple detection devices arranged along the moving route of the battery cover 6 are fixed and the multiple detection devices are arranged at a set distance, each detection device has a detection area. It can be understood that on the moving route of the battery cover 6, there is a detection area at each set distance, which requires that there are corresponding spacing requirements between two adjacent battery covers 6; in addition, the length and width specifications of the battery cover 6 are diverse, so when placing the battery cover 6 into the detection equipment, it is also necessary to consider that the arrangement of the battery cover 6 with larger dimensions in the width direction or the length direction will not interfere with each other, so it is necessary to consider the distance between the two adjacent grasping parts 123 when placing and grasping the battery cover 6.

[0093] On the other hand, in some application scenarios, the battery cover plate 6 is carried by an empty tray 7, each empty tray 7 can carry multiple battery cover plates 6, and different types of empty trays 7 have different carrying forms for the battery cover plates 6. In one embodiment, the width direction of the battery cover plate 6 located in the empty tray 7 faces the entrance end 21, and in another embodiment, the length direction of the battery cover plate 6 located in the empty tray 7 faces the entrance end 21. Therefore, when placing the battery cover plate 6 on the detection equipment, it is also necessary to consider whether the direction of the battery cover plate 6 needs to be converted to adapt to the detection area in the detection equipment.

[0094] Taking the above two aspects into consideration, it is necessary to change and rotate the horizontal distance between the multiple grabbing parts 123 to increase the compatibility of the detection equipment.

[0095] Please continue to see the attached Figure 5 The pitch-changing module 122 includes a base frame 1221, a pitch-changing plate 1222 and a connecting block 1223; the pitch-changing plate 1222 is driven to move along the Z-axis direction, and the pitch-changing plate 1222 has a plurality of inclined grooves 12221, and the plurality of inclined grooves 12221 are radially gathered at one end and diffused at the other end; the base frame 1221 also has a slide rail 12211 extending in the horizontal direction, and a plurality of connecting blocks 1223 are slidably arranged on the slide rail 12211, and each connecting block 1223 is slidably arranged in the inclined groove 12221 in a one-to-one correspondence; each connecting block 1223 is connected to the gripping portion 123. In this way, each connecting block 1223 can slide horizontally on the slide rail 12211 and move obliquely along the inclined groove 12221. Specifically, when the pitch-changing plate 1222 is lifted or lowered along the Z axis, the upper end of the connecting block 1223 can be guided by the oblique side of the oblique groove 12221, so that the connecting block 1223 drives the grabbing portion 123 to move horizontally along the slide rail 12211, thereby realizing the change of the distance between two adjacent grabbing portions 123.

[0096] It can be understood that “two adjacent gripping portions 123” refer to the gripping portions 123 respectively connected to two different adjacent connecting blocks 1223, rather than two adjacent gripping portions 123 belonging to the same connecting block 1223. The distance between the two adjacent gripping portions 123 is changed by changing the positions of the two adjacent connecting blocks 1223. Optionally, each connecting block 1223 can be connected to one or more gripping portions 123.

[0097] In this embodiment, the inclined groove 12221 of the pitch variable plate 1222 is gathered at the bottom and diffused at the top. Therefore, when the pitch variable plate 1222 moves downward, the inclined side of the inclined groove 12221 guides the connecting block 1223, prompting the connecting block 1223 to move on the slide rail 12211, and the multiple grasping parts 123 perform a diffuse motion, and the distance between the two adjacent grasping parts 123 increases. At the same time, the length of the inclined groove 12221 limits the displacement of the connecting block 1223 in the horizontal direction, thereby controlling the pitch change amount between the two adjacent grasping parts 123; in another embodiment, the inclined groove 12221 of the pitch variable plate 1222 is diffused at the bottom and gathered at the top. Then, when the pitch variable plate 1222 moves downward, the multiple grasping parts 123 perform a tightening motion.

[0098] Optionally, the base frame 1221 has a sliding groove 12212 extending along the Z-axis direction, and the pitch variable plate 1222 can move up and down along the sliding groove 12212.

[0099] Furthermore, the connecting block 1223 has a first sliding end and a second sliding end, the first sliding end is slidably disposed on the slide rail 12211, the second sliding end is slidably disposed in the inclined slot 12221, and the first sliding end and the second sliding end have the same horizontal movement tendency. When the pitch-changing plate 1222 moves upward or downward, the inclined edge of the inclined slot 12221 guides the second sliding end, so that the second sliding end and the first sliding end move together in the horizontal direction.

[0100] In this embodiment, the inclined grooves 12221 are arranged in pairs, and the inclined grooves 12221 arranged in pairs are symmetrical with respect to the center line 1 of the Z-axis direction of the pitch variable plate 1222, and the projection heights of the plurality of inclined grooves 12221 in the Z-axis direction are the same. In this way, when the pitch variable plate 1222 descends to the maximum height, the second sliding end of each connecting block 1223 slides to the end of the inclined groove 12221, which is beneficial to controlling the displacement of the connecting block 1223.

[0101] In this embodiment, the number of the inclined grooves 12221 is four, and the four inclined grooves 12221 are symmetrically distributed along the center line 1 of the Z axis of the pitch change plate 1222. In the two inclined grooves 12221 on one side of the center line 1, the angle between the inclined groove 12221 relatively close to the center line 1 and the center line 1 is α, and the angle between the inclined groove 12221 relatively far from the center line 1 and the center line 1 is β, and the angle α is smaller than the angle β. Therefore, when the pitch change plate 1222 descends or rises a vertical distance, the horizontal displacement of the connection block 1223 relatively close to the above-mentioned center line 1 is smaller than the horizontal displacement of the connection block 1223 relatively far from the above-mentioned center line 1, and the distance between the two connection blocks 1223 can be increased.

[0102] Furthermore, in order to ensure that when the pitch-changing plate 1222 descends or rises a vertical distance, the pitch increments between each two adjacent grabbing parts 123 are the same, so as to achieve quantitative pitch change, in this embodiment, the tangent value of the angle β is three times the tangent value of the angle α. Specifically, when the pitch-changing plate 1222 descends or rises to the same height h, the pitch increment of the inclined groove 12221 where the angle α is located and the adjacent inclined groove 12221 is Δ1=2htanα (the movement directions of the two inclined grooves 12221 are opposite), and the pitch increment of the adjacent another inclined groove 12221 is Δ2=htanβ-htanα (the movement directions of the two inclined grooves 12221 are the same). If Δ1=Δ2, then tanβ=3tanα. It can ensure that the connecting block 1223 drops to the same height when moving in the four inclined grooves 12221, and the distance change between two adjacent connecting blocks 1223 is the same, that is, the distance change between two adjacent grasping parts 123 in this embodiment is the same, which is easier to quantitatively change the distance.

[0103] like Figure 3 As shown, in this embodiment, a bracket is also included, and the bracket includes a first guide rail 111 and a second guide rail 112. The first guide rail 111 and the second guide rail 112 extend along the X-axis and the Y-axis respectively. The rotating module 121 is driven to move along the first guide rail 111, and the first guide rail 111 is driven to drive the rotating module 121 to move along the second guide rail 112. The bracket can be set at the inlet end 21 or the outlet end 22 of the detection device, and is suitable for the grasping part 123 to complete the displacement in the X-axis and Y-axis directions at the inlet end 21 and the outlet end 22, so as to further accurately and quickly grasp the product and improve the compatibility of the detection device.

[0104] In this embodiment, the conveying device 23 can be a conveyor belt. Figure 6 As shown, the battery cover plate 6 is conveyed by a conveyor belt and passes through each inspection station 25 in sequence.

[0105] See also Figure 7~Figure 9 The conveying device 23 is also provided with a flipping device 24 for flipping the battery cover 6 so that the battery cover 6 can be switched to the front state or the back state according to the detection needs or the collection needs. In this embodiment, the battery cover 6 passes through the front detection device in a front posture in sequence under the conveying action of the conveying device 23, and after passing through the front detection device, it passes through the back detection device in a back posture driven by the flipping of the flipping device 24, thereby completing the detection of the front and back sides of the battery cover 6.

[0106] See also Figure 8In this embodiment, there are two flipping devices 24, namely a first flipping device 24a and a second flipping device 24b. The first flipping device 24a is arranged between the front detection area and the back detection area, and is used to flip the battery cover 6 from the front to the back; the second flipping device 24b is arranged at the end of the back detection area, and is used to flip the battery cover 6 placed on the conveying device 23 in a back posture back to a front posture, so as to facilitate the subsequent loading of the battery cover 6.

[0107] Please continue to see Fig. 9 The flipping device 24 includes a frame 240 and at least two flipping disks 241, each of which is connected to the frame 240 through a connecting shaft 242 and rotatably positioned on the frame 240; each flipping disk 241 has a plurality of flipping stations 2411 uniformly distributed along the circumference of the flipping disk 241, and the flipping stations 2411 of adjacent flipping disks 241 are arranged one by one in the axial direction of the connecting shaft 242.

[0108] The flip device 24 has a feed flip port and a discharge flip port, both of which are located on the horizontal plane where the conveying device 23 is located. The feed flip port is used to clamp the battery cover plate 6 that needs to be flipped over in a front posture, and the discharge flip port is used to release the flipped battery cover plate 6 with the conveying of the conveying device 23. With the rotation of the flip disk 241, the flip stations 2411 of each flip disk 241 are alternately switched between the feed flip port and the discharge flip port in sequence.

[0109] Furthermore, in order to ensure the stability of the battery cover 6 during the flipping process, preferably, each flipping station 2411 is provided with a clamping structure 2412, and the clamping structure 2412 has a limiting slot for limiting the position of the battery cover 6. When the battery cover 6 is transported to the flipping station 2411 of the flipping plate 241, it is positioned by the clamping structure 2412. The flipping plate 241 flips and drives the battery cover 6 in the clamping structure 2412 to flip together. Due to the limiting effect of the limiting slot, the battery cover 6 in the clamping structure 2412 is in a stable state.

[0110] Considering the diversity of battery cover plates 6, in order to increase the applicability of the flip device 24, in this embodiment, on the one hand, the clamping structure 2412 is arranged in the flip station 2411 along the radial direction of the flip disk 241, and the radial position of the clamping structure 2412 is adjusted according to the width of the battery cover plate 6 to ensure that the clamping structure 2412 is more suitable for the size of the battery cover plate 6 and improve the stability of the flipping of the battery cover plate 6. Preferably, the position of the clamping structure 2412 is adjusted to at least clamp the middle part of the battery cover plate 6. On the other hand, the flip device 24 also includes a connecting shaft 242, each flip disk 241 performs a flipping movement around the connecting shaft 242, and each flip disk 241 is movable along the axial direction of the connecting shaft 242, and the distance between two adjacent flip disks 241 is adjusted according to the length of the battery cover plate 6 to clamp the battery cover plate 6 more stably.

[0111] Furthermore, in order to facilitate the transmission of the torque of the connecting shaft 242 to the flip plate 241, in this embodiment, the connecting shaft 242 includes a flat screw.

[0112] During the movement of the battery cover 6 on the conveying device 23, position displacement is inevitable. In order to further increase the friction between the battery cover 6 and the conveying device 23, the prior art adopts a conveyor belt with partitions, which can effectively solve the problem of position displacement of the battery cover 6. However, due to the different specifications and sizes of the battery cover 6, when replacing battery covers 6 of other specifications for testing, it is also necessary to replace the conveyor belt with partitions at the same time, which is complicated to operate and has low versatility. Moreover, the conveyor belt with partitions also increases the contact area between the partition and the battery cover 6 during the conveying process, thereby increasing the probability of damage to the battery cover 6 to a certain extent.

[0113] In order to solve the above-mentioned problem of ensuring the friction between the battery cover 6 and the conveying device 23 at the expense of the versatility of the battery cover 6 detection equipment, a better implementation method is that this embodiment adopts a high-friction conveyor belt, and adds a certain thickness of polyurethane straight-striped backing material on the back of the ordinary belt. Under the premise of ensuring strength and not damaging the battery cover 6 during transportation, the friction between the high-friction conveyor belt and the front and back of the battery cover 6 is increased, and the battery cover 6 can be conveyed at high speed only under the action of friction.

[0114] In this embodiment, see Figure 9~Figure 11The automatic inspection equipment for plate-like products also includes a group of centering and positioning devices 5 relatively arranged on both sides of the conveying device 23 in the width direction. The centering and positioning devices 5 can solve the problem of resetting the battery cover 6 that has been displaced due to long-distance transportation, which is beneficial to ensure the accuracy and reliability of the front and back detection of the battery cover 6. Therefore, the centering and positioning devices 5 can be arranged at the front end of the front detection area 231 and the front end of the back detection area 232 on the conveying device 23 to correct their own position before passing through the front detection area 231 and the back detection area 232.

[0115] Each centering and positioning device 5 includes a second clamping portion 52 and a group of first clamping portions 51 arranged opposite to each other along the X-axis direction, and the two second clamping portions 52 in the centering and positioning devices 5 arranged in pairs are arranged opposite to each other along the Y-axis direction; the two first clamping portions 51 in each of the centering and positioning devices 5 are driven to move toward or away from each other along the X-axis direction, and limit the two sides of the end of the battery cover 6 in the X-axis direction; the two second clamping portions 52 of the two centering and positioning devices 5 are driven to move toward or away from each other along the Y-axis direction, and limit the two ends of the battery cover 6 in the Y-axis direction.

[0116] Optionally, the first clamping portion 51 and the second clamping portion 52 both include a POM (polyoxymethylene) cylindrical bushing, and the POM (polyoxymethylene) cylindrical bushing is utilized to contact the battery cover plate 6. POM (polyoxymethylene) has good wear resistance, and the contact area between the cylindrical bushing and the battery cover plate 6 is small, which further reduces the risk of damage to the battery cover plate 6, and can be adapted to more types of covers.

[0117] Please continue to see Fig.11 Each of the first clamping parts 51 is also positioned and connected with a sloped portion 53, and a rolling portion 54 is rollingly arranged on the sloped surface of each of the sloped portions 53. The rolling portion 54 is driven to move along the Y-axis direction and rolls on the sloped surface of the sloped portion 53 at the same time, squeezing the two sloped portions 53 and driving the two first clamping parts 51 to approach each other in the X-axis direction until the two first clamping parts 51 contact the battery cover 6.

[0118] Furthermore, the inclined surfaces of the two inclined portions 53 are axially symmetrically distributed along the center line 1 of the centering and positioning device 5 in the Y-axis direction, and the planes where the inclined surfaces are located intersect with the center line 1 .

[0119] In this embodiment, Fig.11As shown, when the inclined surfaces of the two inclined portions 53 are in an "eight" shape, the rolling portion 54 moves along the Y-axis direction to approach the conveying device 23, thereby squeezing the inclined portion 53 and driving the two first clamping portions 51 to approach each other along the X-axis direction. On the contrary, the rolling portion 54 moves away from the conveying device 23, and the two first clamping portions 51 can move away from each other along the X-axis direction through the action of the elastic member.

[0120] Optionally, the inclined portion 53 is a wedge.

[0121] In this embodiment, a driving structure (not shown in the figure, which may be a cylinder or a motor) drives the mounting seat of the rolling portion 54 to move along the Y-axis direction, and the outer end of the second clamping portion 52 is directly or indirectly connected to the mounting seat, so that the second clamping portion 52 can be driven to move in the Y-axis direction by the Y-axis movement of the mounting seat; at the same time, the rolling portion 54 drives the first clamping portion 51 to move along the X-axis direction through the inclined portion 53, so as to ensure that the first clamping portion 51 and the second clamping portion 52 can be driven by the same driving structure to realize the limited clamping of the battery cover plate 6 in the X-axis direction and the Y-axis direction at the same time.

[0122] Furthermore, each centering and positioning device 5 further includes a sliding guide rail 56 , which is disposed along the X-axis, and the first clamping portion 51 is slidably disposed on the sliding guide rail 56 .

[0123] In this embodiment, a first elastic member (not shown in the figure) is also included, which acts on the first clamping portion 51 to keep the two first clamping portions 51 in an open movement trend. A second elastic member 55 is also included, which acts between the mounting seat of the rolling portion 54 and the second clamping portion 52, and keeps the mounting seat of the rolling portion 54 away from the movement trend of the second clamping portion 52. When the driving structure (such as a cylinder) drives the rolling portion 54 to move along the Y axis, the tension of the second elastic member 55 is first overcome, and at the same time, a thrust is generated on the second clamping portion 52 in the Y axis. The thrust is supported by the tension of the second elastic member 55, which can ensure the stable positioning of the battery cover 6 in the Y axis direction; when the rolling portion 54 moves along the Y axis, the first clamping portion 51 overcomes the tension of the first elastic member and moves in the X axis direction by acting on the inclined portion 53, thereby achieving the clamping and positioning of the battery cover 6 in the X axis direction. In this way, the positioning of the battery cover 6 in both the X axis and the Y axis can be achieved through the same driving structure.

[0124] Optionally, the first elastic member is a spring, and the second elastic member 55 is a spring.

[0125] By setting the centering positioning device 5, on the one hand, the clamping part used to position the battery cover 6 in the X-axis direction and the Y-axis direction is integrated into one positioning device, which can save equipment space; on the other hand, when performing the centering positioning action, the positioning in the X-axis and Y-axis directions can be completed by performing one driving action through the same driving mechanism, which helps to improve the overall rhythm of automated production and thus improve production efficiency.

[0126] Taking into account that the battery cover plate 6 needs to be loaded onto a tray after inspection, a preferred embodiment is that the automatic inspection equipment for plate-like products also includes an empty tray reflux device, which collects empty trays 7 for carrying the battery cover plate 6, and applies the collected empty trays 7 to the loading of the inspected battery cover plate 6.

[0127] The empty tray reflux device has a collecting end 31, a stacking end 32, and a conveying mechanism 33 connected therebetween; the collecting end 31 is arranged corresponding to the inlet end 21 of the conveying device 23, and the stacking end 32 is arranged corresponding to the outlet end 22 of the conveying device 23, and the empty tray 7 is conveyed to the stacking end 32 by the conveying mechanism 33. The battery cover plate 6 after inspection is grabbed by the rotating variable-pitch grabbing mechanism 12 arranged at the outlet end 22 and placed in the empty tray 7 at the stacking end 32.

[0128] It can be understood that the reflux direction of the empty tray 7 formed by the empty tray reflux device is consistent with the product conveying direction formed by the battery cover plate 6 on the conveying device 23 .

[0129] The empty tray 7 is an empty tray 7 obtained after the rotating variable-pitch grabbing mechanism 12 at the entrance end 21 grabs the battery cover 6 and places it on the conveying device 23. The empty tray 7 moves along the conveying mechanism 33 and moves to the stacking end 32 to wait for the battery cover 6 that has completed the load-bearing detection.

[0130] In this embodiment, the conveying mechanism 33 may be a conveying belt.

[0131] Preferably, the conveying mechanism 33 is divided into a first conveying mechanism 331 and a second conveying mechanism 332, the head end of the first conveying mechanism 331 is arranged corresponding to the collecting end 31, the end of the second conveying mechanism 332 is arranged corresponding to the stacking end 32, and the end of the first conveying mechanism 331 is connected to the head end of the second conveying mechanism 332.

[0132] The first conveying mechanism 331 is driven by a first driving unit to perform a conveying action, and the second conveying mechanism 332 is driven by a second driving unit to perform a conveying action.

[0133] The first driving part and the second driving part may both be motors.

[0134] The working process of the existing present invention is as follows:

[0135] The plate-like product to be inspected is grabbed by the rotating variable-pitch grabbing mechanism 12 and placed on the conveying device 23. The rotating variable-pitch grabbing mechanism 12 has a grabbing portion, which can be driven to move at least along the X-axis, the Y-axis and the Z-axis, so that the plate-like products with different placement positions can be grabbed, thereby improving the versatility of the inspection device;

[0136] A plurality of inspection stations 25 are arranged on the conveying device 23. The plate-like product to be inspected is transported by the conveying device 23 and sequentially passes through the plurality of inspection stations 25. The inspection stations 25 may be manual inspections of the plate-like product, or an inspection device may be arranged to inspect the plate-like product.

[0137] A flipping device 24 is also provided on the conveying device 23, and the flipping device 24 defines a front detection area and a back detection area on the conveying device 23, and at least one detection station 25 is provided in the front detection area and the back detection area. The plate-like products pass through the front detection area and the back detection area in turn to complete the front and back detection, thereby improving the comprehensiveness of the detection.

[0138] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic inspection device for plate-shaped products, characterized in that: It includes a conveying device, on which a plurality of detection stations are arranged; The conveying device is also provided with a turning device for turning over the plate-shaped product, and the turning device is used as a boundary to define a front detection area of ​​the product and a back detection area of ​​the product on the conveying device, and at least one detection station is provided in each detection area; It also includes a rotating variable-distance grabbing mechanism for changing the direction of the plate-like product and the distance between two adjacent plate-like products, the rotating variable-distance grabbing mechanism is at least arranged corresponding to the inlet end of the conveying device, and the rotating variable-distance grabbing mechanism has a grabbing part, which is driven to move at least along the X-axis, the Y-axis and the Z-axis, wherein the direction of the X-axis is the conveying direction of the product in the conveying device; The turning device comprises a frame and at least two turning discs, each turning disc is connected by a connecting shaft and is rotatably positioned on the frame; Each turning disk has a plurality of turning stations evenly distributed along the circumference of the turning disk, and the turning stations of adjacent turning disks are arranged one by one in the axial direction of the connecting shaft; The turning device has a feed turning port and a discharge turning port, both of which are located on the horizontal plane where the conveying device is located. The feed turning port is used to clamp the plate-like product to be turned over in a front posture, and the discharge turning port is used to release the turned over plate-like product along with the conveying of the conveying device. As the turning plate rotates, the turning stations of each turning plate are alternately switched between the feed turning port and the discharge turning port in turn. Each turning station is provided with a clamping structure, and each clamping structure has a limiting slot for limiting the position of the plate-shaped product; The clamping structure is arranged in the turning station along the radial direction of the turning plate, and the radial position of the clamping structure is adjusted according to the width of the plate-like product; The turning disc is movable along the axial direction of the connecting shaft, and the distance between two adjacent turning discs is adjusted according to the length of the plate-shaped product.

2. The plate-shaped product automatic detection device according to claim 1, characterized in that: The rotating variable-distance grabbing mechanism comprises a rotating module, a variable-distance module positioned and connected to the rotating module, and a plurality of grabbing parts positioned and connected to the variable-distance module; The variable distance module drives the horizontal distance between two adjacent grasping parts to change, and the rotating module drives the variable distance module to rotate around the Z axis; The pitch-changing module comprises a base frame, a pitch-changing plate and a connecting block; The pitch-variable plate is driven to move along the Z-axis direction, and the pitch-variable plate has a plurality of inclined grooves, and the plurality of inclined grooves are in a radial shape with one end gathered and the other end diffused; The base frame also has a slide rail extending in the horizontal direction, and a plurality of connecting blocks are slidably arranged on the slide rail, and each of the connecting blocks is slidably arranged in the inclined groove in a one-to-one correspondence; Each of the connecting blocks is connected to the grabbing portion.

3. The plate-shaped product automatic detection device according to claim 2, characterized in that: The base frame has a sliding groove extending along the Z-axis direction, and the pitch-changing plate is slidably arranged in the sliding groove; The inclined grooves are arranged in pairs and are symmetrical with respect to the center line of the pitch variable plate in the Z-axis direction, and the projection heights of the plurality of inclined grooves in the Z-axis direction are all the same.

4. The automatic plate-shaped product detection device according to claim 3, characterized in that: The number of the inclined grooves is four. Among the two inclined grooves on one side of the center line, the angle between the inclined groove relatively close to the center line and the center line is α, and the angle between the inclined groove relatively far from the center line and the center line is β, and the angle α is smaller than the angle β.

5. The plate-shaped product automatic detection device according to claim 2, characterized in that: The connecting block has a first sliding end and a second sliding end, the first sliding end is slidably disposed on the slide rail, the second sliding end is slidably disposed in the inclined groove, and the first sliding end and the second sliding end have the same horizontal movement tendency.

6. The plate-shaped product automatic detection device according to claim 1, characterized in that: There are two flipping devices, namely a first flipping device and a second flipping device. The first flipping device is used as a boundary to define the conveying device to have a front detection area and a back detection area in sequence along the X-axis direction. The second flipping device is located at the end of the back detection area.

7. The plate-shaped product automatic detection device according to claim 1, characterized in that: It also includes a set of centering and positioning devices relatively arranged on both sides of the conveying device; The centering and positioning device comprises a second clamping portion and a group of first clamping portions arranged opposite to each other along the X-axis direction, and two of the second clamping portions in the centering and positioning device arranged in pairs are arranged opposite to each other along the Y-axis direction; The two first clamping parts in each of the centering and positioning devices are driven to move toward or away from each other along the X-axis direction, and limit the two sides of the product end in the X-axis direction; The two second clamping parts in the two centering and positioning devices are driven to move closer to or farther from each other along the Y-axis direction, and limit the two ends of the product in the Y-axis direction.

8. The plate-shaped product automatic detection device according to claim 7, characterized in that: Each of the first clamping parts is also positioned and connected with an inclined surface, and a rolling part is provided on the inclined surface of each of the inclined surfaces for rolling. The rolling part is driven to move along the Y-axis direction and rolls on the inclined surface of the inclined surface to squeeze the two inclined surfaces and drive the two first clamping parts to move closer to each other in the X-axis direction; The inclined surfaces of the two inclined portions are axially symmetrically distributed along the center line of the centering and positioning device in the Y-axis direction, and the planes where the inclined surfaces are located intersect with the center line; The driving structure drives the mounting seat of the rolling part to move along the Y-axis direction, and the outer end of the second clamping part is directly or indirectly connected to the mounting seat, so that the second clamping part is driven to move in the Y-axis direction through the Y-axis movement of the mounting seat; at the same time, the rolling part drives the first clamping part to move in the X-axis direction through the inclined portion, thereby realizing that the first clamping part and the second clamping part are driven by the same driving structure to simultaneously perform limited clamping of the plate-like product in the X-axis and Y-axis directions.

9. The plate-shaped product automatic detection device according to claim 7, characterized in that: Each centering and positioning device also includes a sliding guide rail, which is arranged along the X-axis, and the first clamping part is slidably arranged on the sliding guide rail.

10. The plate-shaped product automatic detection device according to claim 7, characterized in that: It also includes a first elastic member, which acts on the first clamping portion to keep the two first clamping portions in an open movement trend; The second elastic member is also included. The second elastic member acts between the mounting seat of the rolling portion and the second clamping portion to keep the mounting seat of the rolling portion moving away from the second clamping portion.

11. The plate-shaped product automatic detection device according to claim 1, characterized in that: It also includes an empty tray return device, which has a collecting end, a stacking end, and a conveying mechanism connected therebetween; The collecting end is arranged corresponding to the inlet end, and the stacking end is arranged corresponding to the outlet end of the conveying device; The empty tray is conveyed to the palletizing end by the conveying mechanism; the plate-shaped product after inspection is placed on the empty tray at the palletizing end by a rotating variable-distance grabbing mechanism; The conveying mechanism is divided into a first conveying mechanism and a second conveying mechanism, the head end of the first conveying mechanism is arranged corresponding to the collecting end, the tail end of the second conveying mechanism is arranged corresponding to the stacking end, and the tail end of the first conveying mechanism is connected to the head end of the second conveying mechanism; The first conveying mechanism performs a conveying action by being driven by a first driving unit, and the second conveying mechanism performs a conveying action by being driven by a second driving unit.

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