A camera flat field correction device

Abstract

A kind of camera flat field correction device, including product placement support, light source and camera;Product placement support includes product placement rear support and product placement front support fixedly installed in order from back to front;Product placement rear support includes rear support top plate at its top;Product placement front support includes front support top plate at its top;Light source is fixedly installed between product placement rear support and product placement front support, and is located below rear support top plate and front support top plate;Camera is fixedly installed above light source, rear support top plate and front support top plate.The utility model can obtain better imaging effect, improve product detection precision and effect.

Description

Technical Field

[0001] This utility model belongs to the field of polarizer processing technology. Background Technology

[0002] In existing AOI visual inspection systems, the camera and light source are mounted on a conveyor belt. During camera alignment and calibration, because the gap between the conveyor belts is only about 20mm, the light source shines from below the conveyor belt onto the camera above. As the light passes through the gap between the conveyor belts, it is reflected back onto the camera. This causes color interference from the conveyor belts during alignment, resulting in poor camera imaging and affecting the accuracy and effectiveness of product inspection. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to overcome the defects of the existing technology and propose a camera flat field correction device that can obtain better imaging effect and improve the accuracy and effect of product detection.

[0004] In order to solve the above-mentioned technical problems, the present invention proposes the following technical solution: a camera flat field correction device, comprising a product placement bracket, a light source and a camera; The product placement bracket includes a rear product placement bracket and a front product placement bracket, which are installed and fixed sequentially from back to front. The product placement bracket includes a rear bracket top plate located on top of it; The product placement bracket includes a front bracket top plate located at its top; The light source is installed and fixed between the rear bracket and the front bracket of the product placement, and is located below the top plate of the rear bracket and the top plate of the front bracket. The camera is mounted and fixed above the light source, the rear bracket top plate, and the front bracket top plate.

[0005] A further limitation of the above technical solution is that the camera flat field correction device also includes a fixed base plate and a light source fixing bracket; After the product is placed, the support bracket and the support bracket before the product is placed are installed and fixed on the fixed base plate from back to front. The light source mounting bracket is fixed on the base plate and located between the product placement rear bracket and the product placement front bracket; The light source is mounted and fixed on the light source mounting bracket.

[0006] A further limitation of the above technical solution is that the light source fixing bracket includes a front-to-back movable base plate, a left mounting plate, and a right mounting plate; The movable base plate is mounted on the fixed base plate; The left and right mounting plates are respectively installed and fixed to the left and right ends of the front and rear movable base plate; The light source is mounted and fixed between the left and right mounting plates.

[0007] A further limitation of the above technical solution is that at least one upper, lower, left adjustment slot for the light source is provided on the left mounting plate, and at least one upper, lower, right adjustment slot for the light source is provided on the right mounting plate. The left end of the light source is locked to the left mounting plate by bolts being locked into the upper, lower, left adjustment slots, and the right end of the light source is locked to the right mounting plate by bolts being locked into the upper, lower, right adjustment slots.

[0008] A further limitation of the above technical solution is that the light source fixing bracket also includes a light source front and rear movable mounting base, which includes a mounting base base plate, a front mounting base for the slide rod, a rear mounting base for the slide rod, at least two slide rods, a rotating lead screw, a lead screw threaded block, and a rotating handle; The mounting base plate is installed and fixed at the middle of the rear end of the fixed base plate; The front mounting bracket and the rear mounting bracket of the slide rod are respectively installed and fixed on the front and rear ends of the mounting base plate; The rear mounting base of the slide rod has a threaded hole that runs through the front and rear. The front and rear ends of at least two slide rods are respectively mounted and fixed on the front mounting base and the rear mounting base of the slide rod, and the at least two slide rods are arranged along the front-back direction and are parallel to each other; The rotating screw is provided with an external thread, which is threaded to the internal thread of the threaded hole of the slide rod rear mounting seat. The rotating screw is rotatably mounted on the slide rod rear mounting seat. The rotating lead screw is arranged along the front-to-back direction, located between at least two slide rods and parallel to at least two slide rods; The lead screw block has a through-hole for rotating lead screw and at least two through holes for sliding rods. At least two slide rods are inserted into at least two slide rod through holes, and the screw rod block can slide along the front-back direction on at least two slide rods; The screw is connected by the external thread of the rotating screw and the internal thread of the screw bolt hole of the screw bolt block, and the screw bolt block is installed on the rotating screw. The rotating handle is installed and fixed at the rear end of the rotating lead screw; The base plate, which moves forward and backward, is fixed on the top surface of the screw rod block.

[0009] A further limitation of the above technical solution is that the camera flat field correction device also includes a fixed base plate and a camera fixing bracket; The camera mounting bracket is fixed to the base plate. The camera mounting bracket includes a column that is vertically fixed to the base plate and a camera mounting plate that is fixed to the top of the column. The camera is mounted and fixed on the camera mounting plate.

[0010] A further limitation of the above technical solution is that the camera mounting bracket also includes an upper and lower sliding rail mounting plate, an upper and lower sliding rail, an upper and lower sliding slider, and a slider positioning rod; The upper and lower sliding rail mounting plates are vertically installed and fixed to the top of the column; The upper and lower slide rails are installed and fixed on the upper and lower slide rail mounting plate along the vertical direction; The sliding slider is slidably mounted on the upper and lower slide rails, and the side of the sliding slider has a slider thread hole; The slider positioning rod has an external thread, which is threaded to the internal thread of the slider threaded hole. The slider positioning rod is screwed onto the upper and lower sliding sliders. Tightening the slider positioning rod will stably fix the upper and lower sliding sliders on the upper and lower slide rails. The camera mounting plate is fixed on the up and down sliding slider.

[0011] A further limitation of the above technical solution is that at least two sets of column mounting holes are sequentially opened from back to front on the front end of the fixed base plate. Each set of column mounting holes includes a set of left column mounting holes on the left side and a set of right column mounting holes on the right side. Each set of left column mounting holes includes at least one left column mounting hole, and each set of right column mounting holes includes at least one right column mounting hole. The camera mounting bracket also includes a column fixing device, which includes a left column fixing block and a right column fixing block; The left fixing block of the column includes a left fixing base plate and a left fixing vertical plate extending vertically upward from the right end of the left fixing base plate; A set of left fixing holes is provided on the left fixing base plate, and the set of left fixing holes includes at least one left fixing hole; The left fixed vertical plate is installed and fixed on the left side of the column; The right fixing block of the column includes a right fixing base plate and a right fixing vertical plate extending vertically upward from the left end of the right fixing base plate; A set of right fixing holes is provided on the right fixing base plate, and the set of right fixing holes includes at least one right fixing hole; The right fixed vertical plate is installed and fixed on the right side of the column; The column is installed and fixed on the base plate by bolting into the left fixing hole and the left mounting hole of the column, as well as the right fixing hole and the right mounting hole of the column.

[0012] A further limitation of the above technical solution is that the camera flat field correction device also includes a fixed base plate, and at least two sets of rear bracket left side plate mounting holes are provided at the left end of the fixed base plate, each set of rear bracket left side plate mounting holes including at least one rear bracket left side plate mounting hole. At least two sets of mounting holes for the right side plate of the rear bracket are provided at the right end of the fixed base plate, and each set of mounting holes for the right side plate of the rear bracket includes at least one mounting hole for the right side plate of the rear bracket. The product placement bracket includes a left rear bracket panel and a right rear bracket panel; A rear bracket left side plate fixing block is vertically bent and extended at the bottom of the rear bracket left side plate, and a set of rear bracket left side plate fixing holes are provided on the rear bracket left side plate fixing block; The set of rear bracket left side plate fixing holes includes at least one rear bracket left side plate fixing hole; A rear bracket right side plate fixing block is vertically bent and extended at the bottom of the rear bracket right side plate, and a set of rear bracket right side plate fixing holes are provided on the rear bracket right side plate fixing block. The right side plate mounting holes of the rear bracket include at least one right side plate mounting hole of the rear bracket. The top plate of the rear bracket is installed and fixed between the left side plate and the right side plate of the rear bracket. The left side plate of the rear bracket is installed and fixed on the fixed base plate by screwing bolts into the fixing holes and mounting holes of the left side plate of the rear bracket. The right side plate of the rear bracket is installed and fixed on the fixed base plate by screwing bolts into the fixing holes and mounting holes of the right side plate of the rear bracket. At least two sets of front bracket left side plate mounting holes are provided at the left end of the fixed base plate, and each set of front bracket left side plate mounting holes includes at least one front bracket left side plate mounting hole. At least two sets of front bracket right side plate mounting holes are provided at the right end of the fixed base plate, and each set of front bracket right side plate mounting holes includes at least one front bracket right side plate mounting hole. The product placement bracket includes a left side panel and a right side panel. A front bracket left side plate fixing block is vertically bent and extended at the bottom, and a set of front bracket left side plate fixing holes are provided on the front bracket left side plate fixing block. The set of front bracket left side plate fixing holes includes at least one front bracket left side plate fixing hole; A front bracket right side plate fixing block is vertically bent and extended at the bottom of the front bracket right side plate, and a set of front bracket right side plate fixing holes are provided on the front bracket right side plate fixing block. The front bracket right side plate mounting holes include at least one front bracket right side plate mounting hole. The top plate of the front bracket is installed and fixed between the left side plate and the right side plate of the front bracket. The left side plate of the front bracket is installed and fixed on the fixed base plate by bolting into the fixing holes and mounting holes of the left side plate of the front bracket. The right side plate of the front bracket is installed and fixed on the fixed base plate by bolting into the fixing holes and mounting holes of the right side plate of the front bracket.

[0013] A further limitation of the above technical solution is that the rear support for product placement includes a left rear support plate and a right rear support plate, and the front support for product placement includes a left front support plate and a right front support plate. At least one rear bracket left side plate has a rear bracket left side plate up and down adjustment groove, and at least one rear bracket right side plate has a rear bracket right side plate up and down adjustment groove. The left end of the top plate of the rear bracket is installed and fixed on the left side plate of the rear bracket by bolting it into the upper and lower adjustment slot of the left side plate of the rear bracket, and the right end of the top plate of the rear bracket is installed and fixed on the right side plate of the rear bracket by bolting it into the upper and lower adjustment slot of the right side plate of the rear bracket. At least one front bracket left side plate is provided with a front bracket left side plate up and down adjustment groove, and at least one front bracket right side plate is provided with a front bracket right side plate up and down adjustment groove. The left end of the top plate of the front bracket is fixed to the left side plate of the front bracket by bolting it into the upper and lower adjustment slot on the left side plate of the front bracket, and the right end of the top plate of the front bracket is fixed to the right side plate of the front bracket by bolting it into the upper and lower adjustment slot on the right side plate of the front bracket.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Unlike existing technologies and equipment, this invention eliminates the problem of belt line reflection, solves the issue of poor imaging effect of camera flat field correction on belt lines, and improves the accuracy and effect of product detection.

[0015] 2. This utility model can adjust the front-to-back and vertical positions (i.e., height) of the camera, light source, and product placement bracket in a timely manner to obtain better imaging results. Attached Figure Description

[0016] Figure 1 This is a three-dimensional assembly diagram of the camera flat field correction device of this utility model.

[0017] Figure 2 This is an exploded view of the camera flat field correction device of this utility model.

[0018] Figure 3 This is another exploded view of the camera flat field correction device of this utility model.

[0019] Figure 4 It is a 3D view of the mounting base for the light source moving back and forth. Detailed Implementation

[0020] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation details without creative effort are all within the protection scope of this invention.

[0021] Please see Figures 1 to 4 This utility model proposes a camera flat field correction device, which includes a fixed base plate 1, a product placement bracket 2, a light source fixing bracket 4, a light source 5, a camera fixing bracket 6, and a camera 7.

[0022] Two sets of rear bracket left side plate mounting holes 11 and two sets of front bracket left side plate mounting holes 12 are sequentially opened from back to front on the left end of the fixed base plate 1.

[0023] Each set of rear bracket left side plate mounting holes 11 includes one rear bracket left side plate mounting hole 11.

[0024] Each set of front bracket left side plate mounting holes 12 includes one front bracket left side plate mounting hole 12.

[0025] Two sets of rear bracket right side plate mounting holes 13 and two sets of front bracket right side plate mounting holes 14 are sequentially opened from back to front on the right end of the fixed base plate 1.

[0026] Each set of rear bracket right side plate mounting holes 13 includes one rear bracket right side plate mounting hole 13.

[0027] Each set of front bracket right side plate mounting holes 14 includes one front bracket right side plate mounting hole 14.

[0028] Three sets of column mounting holes 15 are sequentially opened from back to front at the front end of the middle part of the fixed base plate 1.

[0029] Each set of column mounting holes 15 includes a set of left-side column mounting holes 151 located on the left side and a set of right-side column mounting holes 153 located on the right side.

[0030] Each set of left-side mounting holes 151 for the uprights includes four left-side mounting holes 151 for the uprights.

[0031] Each set of right-side mounting holes 153 includes four right-side mounting holes 153 for each column.

[0032] like Figure 2As shown, the fixed base plate 1 has three sets of left-side mounting holes 151 (eight in total) on its left side. The first, second, and third sets of left-side mounting holes 151 respectively include four rearward, central, and frontward mounting holes 151. The fixed base plate 1 has three sets of right-side mounting holes 153 (eight in total) on its right side. The first, second, and third sets of right-side mounting holes 153 respectively include four rearward, central, and frontward mounting holes 153.

[0033] The first set of column mounting holes 15 includes four holes: a left side mounting hole 151 and a right side mounting hole 153.

[0034] The second set of column mounting holes 15 includes four holes in total: a left side mounting hole 151 for the second set of columns and a right side mounting hole 153 for the second set of columns.

[0035] The third set of column mounting holes 15 includes four holes: a left side mounting hole 151 and a right side mounting hole 153.

[0036] The product placement bracket 2 includes a rear product placement bracket 21 and a front product placement bracket 23, which are installed and fixed on the fixed base plate 1 from back to front and whose front and back positions can be adjusted.

[0037] The product placement bracket 21 includes a left rear bracket plate 211 and a right rear bracket plate 213 that can be adjusted in front and back positions, and a top rear bracket plate 215 located at the top of the product placement bracket 21 and that can be adjusted in up and down positions.

[0038] A rear support left side plate 211 is vertically bent at the bottom to extend a rear support left side plate fixing block 2111, and a set of rear support left side plate fixing holes 2113 are provided on the rear support left side plate fixing block 2111.

[0039] The set of rear bracket left side plate fixing holes 2113 includes one rear bracket left side plate fixing hole 2113.

[0040] An adjustment groove 2115 for the left side plate 211 of the rear bracket is provided on the upper part of the left side plate 211 of the rear bracket.

[0041] A rear support right side plate 213 is vertically bent at the bottom to extend a rear support right side plate fixing block 2131, and a set of rear support right side plate fixing holes 2133 are provided on the rear support right side plate fixing block 2131.

[0042] The rear bracket right side plate fixing hole 2133 includes a rear bracket right side plate fixing hole 2133.

[0043] An adjustment groove 2135 for the right side plate 213 of the rear bracket is provided on the upper part of the right side plate 213 of the rear bracket.

[0044] The top plate 215 of the rear bracket is installed and fixed between the left side plate 211 and the right side plate 213 of the rear bracket.

[0045] During installation, use bolts (not shown) to pass through the fixing holes 2113 on the left side plate of the rear bracket group and then lock them into the mounting holes 11 on the left side plate of the first rear bracket group to install and fix the left side plate 211 of the rear bracket onto the fixed base plate 1. Use bolts (not shown) to pass through the fixing holes 2133 on the right side plate of the rear bracket group and then lock them into the mounting holes 13 on the right side plate of the first rear bracket group to install and fix the right side plate 213 of the rear bracket onto the fixed base plate 1. Tighten these bolts to securely install and fix the left side plate 211 and the right side plate 213 of the rear bracket onto the fixed base plate 1. Insert a bolt (not shown) through the vertical adjustment groove 2115 on the left side plate of the rear bracket and lock it into the left end of the top plate 215 of the rear bracket. Install and fix the left end of the top plate 215 of the rear bracket onto the left side plate 211 of the rear bracket. Insert a bolt (not shown) through the vertical adjustment groove 2135 on the right side plate of the rear bracket and lock it into the right end of the top plate 215 of the rear bracket. Install and fix the right end of the top plate 215 of the rear bracket onto the right side plate 213 of the rear bracket. Tighten these bolts to stably install and fix the top plate 215 of the rear bracket between the left side plate 211 and the right side plate 213 of the rear bracket.

[0046] When it is necessary to adjust the front and rear position of the product placement bracket 21, simply remove the bolts from the fixing holes 2113 on the left side plate and 2133 on the right side plate of the same bracket. Then, pass a bolt (not shown) through the fixing hole 2113 on the left side plate of the same bracket and lock it into the mounting hole 11 on the left side plate of the second bracket. Similarly, pass a bolt (not shown) through the fixing hole 2133 on the right side plate of the same bracket and lock it into the mounting hole 13 on the right side plate of the second bracket. Tightening these bolts will securely install the product placement bracket 21 back onto the fixed base plate 1 and successfully adjust its front and rear position.

[0047] When it is necessary to adjust the vertical position (height) of the top plate 215 of the rear bracket, simply loosen the bolts in the vertical adjustment groove 2115 on the left side plate and the vertical adjustment groove 2135 on the right side plate of the rear bracket, adjust the height of the top plate 215 of the rear bracket, and then tighten these bolts.

[0048] The product placement front bracket 23 includes a front bracket left side plate 231 and a front bracket right side plate 233 that can be adjusted in front and back positions, and a front bracket top plate 235 located at the top of the product placement front bracket 23 and that can be adjusted in up and down positions.

[0049] A front bracket left side plate 231 is vertically bent at the bottom to extend a front bracket left side plate fixing block 2311, and a set of front bracket left side plate fixing holes 2313 are provided on the front bracket left side plate fixing block 2311.

[0050] The front bracket left side plate mounting hole 2313 includes one front bracket left side plate mounting hole 2313.

[0051] An adjustment groove 2315 for the upper part of the left side plate 231 of the front bracket is provided.

[0052] A front bracket right side plate 233 extends vertically from the bottom of the front bracket right side plate 233 by a front bracket right side plate fixing block 2331, and a set of front bracket right side plate fixing holes 2333 are provided on the front bracket right side plate fixing block 2331.

[0053] The front bracket right side plate mounting hole 2333 includes one front bracket right side plate mounting hole 2333.

[0054] An adjustment groove 2335 for the upper part of the right side plate 233 of the front bracket is provided.

[0055] The top plate 235 of the front bracket is installed and fixed between the left side plate 231 and the right side plate 233 of the front bracket.

[0056] During installation, use bolts (not shown) to pass through the fixing holes 2313 on the left side plate of the front bracket and then lock them into the mounting holes 12 on the left side plate of the first front bracket to install and fix the left side plate 231 of the front bracket onto the fixing base plate 1. Use bolts (not shown) to pass through the fixing holes 2333 on the right side plate of the front bracket and then lock them into the mounting holes 14 on the right side plate of the first front bracket to install and fix the right side plate 233 of the front bracket onto the fixing base plate 1. Tighten these bolts to securely install and fix the left side plate 231 and the right side plate 233 of the front bracket onto the fixing base plate 1. After passing a bolt (not shown in the figure) through the up-and-down adjustment slot 2315 on the left side plate of the front bracket, lock it into the left end of the top plate 235 of the front bracket. Install and fix the left end of the top plate 235 of the front bracket onto the left side plate 231 of the front bracket. After passing a bolt (not shown in the figure) through the up-and-down adjustment slot 2335 on the right side plate of the front bracket, lock it into the right end of the top plate 235 of the front bracket. Install and fix the right end of the top plate 235 of the front bracket onto the right side plate 233 of the front bracket. Tighten these bolts to stably install and fix the top plate 235 of the front bracket between the left side plate 231 and the right side plate 233 of the front bracket.

[0057] When it is necessary to adjust the front and rear position of the product placement front bracket 23, simply remove the bolts from the fixing holes 2313 and 2333 on the left and right sides of the front bracket. Then, pass a bolt (not shown) through the fixing hole 2313 on the left side of the front bracket and lock it into the mounting hole 12 on the left side of the second front bracket. Pass a bolt (not shown) through the fixing hole 2333 on the right side of the front bracket and lock it into the mounting hole 14 on the right side of the second front bracket. Tightening these bolts will securely install the product placement front bracket 23 onto the fixed base plate 1 again and successfully adjust its front and rear position.

[0058] When it is necessary to adjust the vertical position (height) of the front bracket top plate 235, simply loosen the bolts in the vertical adjustment slots 2315 on the left side plate and 2335 on the right side plate of the front bracket, adjust the height of the front bracket top plate 235, and then tighten these bolts.

[0059] The light source mounting bracket 4 is installed and fixed on the base plate 1 and is located between the product placement bracket 21 and the product placement front bracket 23.

[0060] The light source fixing bracket 4 includes a light source front and rear movable mounting base 40, a front and rear movable base plate 41, a left side mounting plate 42, and a right side mounting plate 43.

[0061] The light source movable mounting base 40 includes a mounting base plate 401, a front mounting base 402 for the slide rod, a rear mounting base 403 for the slide rod, two slide rods 404, a rotating lead screw 405, a lead screw threaded block 406, and a rotating handle 407.

[0062] Mounting base plate 401 is installed and fixed at the middle position of the rear end of fixed base plate 1.

[0063] The front mounting base 402 and the rear mounting base 403 of the slide rod are respectively installed and fixed on the front and rear ends of the mounting base base plate 401.

[0064] The slide bar rear mounting base 403 has a through-hole (not labeled) for the slide bar rear mounting base.

[0065] The front and rear ends of the two slide rods 404 are respectively mounted and fixed on the front slide rod mounting base 402 and the rear slide rod mounting base 403. The two slide rods 404 are arranged along the front-to-back direction and are parallel to each other.

[0066] The rotary screw 405 is provided with an external thread (not shown in the figure). The rotary screw 405 is rotatably mounted in the slide rod rear mounting seat 403 through the threaded connection between the external thread (not shown in the figure) and the internal thread of the threaded hole (not labeled) of the slide rod rear mounting seat.

[0067] The rotating lead screw 405 is arranged along the front-to-back direction, located between the two slide rods 404 and parallel to the two slide rods 404.

[0068] The lead screw connection block 406 has a through-hole (unnumbered) for rotating lead screw and two through holes for sliding rods.

[0069] Two slide rods 404 are inserted into two slide rod through holes (unnumbered), and the screw rod connecting block 406 can slide along the front and back direction on the two slide rods 404.

[0070] The screw threaded block 406 is mounted on the rotating screw 405 by threading the external thread (not shown) of the rotating screw 405 with the internal thread of the rotating screw threaded hole (not labeled) of the screw threaded block 406.

[0071] The rotary handle 407 is mounted and fixed to the rear end of the rotary lead screw 405.

[0072] The front and rear movable base plate 41 is installed and fixed on the top surface of the screw rod connecting block 406.

[0073] The left mounting plate 42 and the right mounting plate 43 are respectively vertically mounted and fixed to the left and right ends of the front-to-back movable base plate 41.

[0074] Two light source adjustment slots 421 are provided on the left mounting plate 42.

[0075] Two light source adjustment slots 431 are provided on the right mounting plate 43.

[0076] During installation, bolts (not shown) are passed through the two upper, lower, left and right adjustment slots 421 of the light source and then locked into the left end of the light source 5, thereby locking the left end of the light source 5 onto the left mounting plate 42. Bolts (not shown) are passed through the two upper, lower, right and right adjustment slots 431 of the light source and then locked into the right end of the light source 5, thereby locking the right end of the light source 5 onto the right mounting plate 43. Tightening these bolts will stably install and fix the light source 5 between the left mounting plate 42 and the right mounting plate 43. Therefore, the light source 5 is installed and fixed on the light source fixing bracket 4.

[0077] The light source 5 is installed and fixed between the product placement rear bracket 21 and the product placement front bracket 23, and is located below the rear bracket top plate 215 and the front bracket top plate 235.

[0078] When you need to adjust the vertical position (height) of the light source 5, simply loosen the bolts at both ends of the light source 5, adjust the height of the light source 5, and then tighten the bolts at both ends.

[0079] Rotating the rotary handle 407 causes the rotary screw 405 to rotate. Through the threaded connection, the screw thread block 406 slides in the front-back direction, and the light source fixing bracket 4 and the light source 5 move synchronously in the front-back direction, so that their front-back positions can be adjusted.

[0080] The camera mounting bracket 6 is installed and fixed on the base plate 1, located in front of the bracket 23 before the product is placed.

[0081] The camera mounting bracket 6 includes a column 61, a column fixing device 62, an upper and lower slide rail mounting plate 63, an upper and lower slide rail 64, an upper and lower sliding slider 65, a slider positioning rod 66, and a camera mounting plate 67.

[0082] The column 61 is vertically installed and fixed at the front center of the fixed base plate 1, located in front of the product placement bracket 23.

[0083] The column fixing device 62 includes a left column fixing block 621 and a right column fixing block 623.

[0084] The left fixing block 621 of the column includes a left fixing base plate 6211 and a left fixing vertical plate 6213 extending vertically upward from the right end of the left fixing base plate 6211.

[0085] A set of left fixing holes 6215 are provided on the left fixing base plate 6211.

[0086] The set of left fixing holes 6215 includes four left fixing holes 6215.

[0087] The left fixed vertical plate 6213 is installed and fixed on the left side of the column 61.

[0088] The right fixing block 623 of the column includes a right fixing base plate 6231 and a right fixing vertical plate 6233 extending vertically upward from the left end of the right fixing base plate 6231.

[0089] The right fixed base plate 6231 has a set of right fixed holes 6235.

[0090] This set of right fixing holes 6235 includes four right fixing holes 6235.

[0091] The right fixed vertical plate 6233 is installed and fixed on the right side of the column 61.

[0092] During installation, use a bolt (not shown) to pass through the left fixing hole 6215 and then lock it into the left mounting hole 151 of the first set of columns. Use a bolt (not shown) to pass through the right fixing hole 6235 and then lock it into the right mounting hole 153 of the first set of columns. Tighten these bolts to securely install and fix the column 61 onto the fixed base plate 1.

[0093] If it is necessary to adjust the front and rear position of the camera mounting bracket 6, first remove the bolts in the left mounting hole 6215 and the right mounting hole 6235. Then, pass the bolt (not shown in the figure) through the left mounting hole 6215 and lock it into the mounting hole 151 on the left side of the second or third set of columns. Then, pass the bolt (not shown in the figure) through the right mounting hole 6235 and lock it into the mounting hole 153 on the right side of the second or third set of columns. Tighten these bolts to securely install and fix the column 61 and the camera mounting bracket 6 on the fixed base plate 1 and successfully adjust the front and rear position.

[0094] The upper and lower sliding rail mounting plates 63 are vertically installed and fixed to the top of the column 61.

[0095] The upper and lower slide rails 64 are installed and fixed on the upper and lower slide rail mounting plate 63 along the vertical direction.

[0096] The vertical sliding slider 65 is slidably mounted on the vertical sliding rail 64 and can slide along the vertical direction on the vertical sliding rail 64.

[0097] The side of the sliding slider 65 has a slider thread hole (not labeled).

[0098] The slider positioning rod 66 has an external thread (not shown in the figure), which is threaded to the internal thread of the slider threaded hole through the external thread (not shown in the figure) and the slider positioning rod 66. The slider positioning rod 66 is screwed onto the upper and lower sliding slider 65.

[0099] When it is necessary to fix the upper and lower sliding slider 65 at a certain position on the upper and lower slide rail 64, simply tighten the slider positioning rod 66 so that its top end is firmly pressed against the upper and lower slide rail 64. With the frictional force between the slider positioning rod 66 and the upper and lower slide rail 64, the upper and lower sliding slider 65 is stably fixed on the upper and lower slide rail 64.

[0100] The camera mounting plate 67 is mounted and fixed on the vertical sliding slider 65.

[0101] Camera 7 is mounted and fixed on camera mounting plate 67.

[0102] The camera 7 is mounted and fixed above the light source 5, the rear bracket top plate 215, and the front bracket top plate 235.

[0103] When you need to adjust the vertical position (height) of camera 7, simply loosen the slider positioning rod 66, adjust the height of camera 7, and then tighten the slider positioning rod 66.

[0104] When you need to adjust the front and back position of camera 7, simply adjust the front and back position of camera mounting bracket 6 as described above, and you will be able to adjust the front and back position of camera 7.

[0105] During operation, the product (not shown) that needs to be illuminated by light source 5 is placed on product placement bracket 2, with light source 5 below the product and camera 7 above it. The front-to-back and vertical positions (i.e., height) of camera 7, light source 5, and product (not shown) can be adjusted as needed to achieve the best imaging effect.

[0106] This utility model has the following beneficial effects: 1. Unlike existing technologies and equipment, this invention eliminates the problem of belt line reflection, solves the issue of poor imaging effect of camera flat field correction on belt lines, and improves the accuracy and effect of product detection.

[0107] 2. This utility model can adjust the front-to-back position and vertical position (i.e., height) of the camera 7, the light source 5 and the product placement bracket 2 in a timely manner, so as to obtain better imaging effect.

[0108] As a variation of the first embodiment, the number of mounting holes 11 on the left side plate of the rear bracket, 12 on the left side plate of the front bracket, 13 on the right side plate of the rear bracket, and 14 on the right side plate of the front bracket on the fixed base plate 1 can be changed to three or more sets.

[0109] Each set of rear bracket left side plate mounting holes 11 can be modified to include two or more rear bracket left side plate mounting holes 11. Correspondingly, the set of rear bracket left side plate fixing holes 2113 can be modified to include two or more rear bracket left side plate fixing holes 2113.

[0110] Each set of front bracket left side panel mounting holes 12 can be modified to include two or more front bracket left side panel mounting holes 12. Correspondingly, the set of front bracket left side panel fixing holes 2313 can be modified to include two or more front bracket left side panel fixing holes 2313.

[0111] Each set of rear bracket right side plate mounting holes 13 can be modified to include two or more rear bracket right side plate mounting holes 13. Correspondingly, the set of rear bracket right side plate fixing holes 2133 can be modified to include two or more rear bracket right side plate fixing holes 2133.

[0112] Each set of front bracket right side plate mounting holes 14 can be modified to include two or more front bracket right side plate mounting holes 14. Correspondingly, the set of front bracket right side plate fixing holes 2333 can be modified to include two or more front bracket right side plate fixing holes 2333.

[0113] As a variation of the first embodiment, the number of column mounting holes 15 on the fixed base plate 1 can be changed to two, four or more sets. Each set of column mounting holes 15 includes a set of left-side column mounting holes 151 and a set of right-side column mounting holes 153 arranged neatly from left to right.

[0114] Each set of left-side mounting holes 151 can be modified to include one, two, three, five, or more left-side mounting holes 151. Correspondingly, the set of left fixing holes 6215 can be modified to include one, two, three, five, or more left fixing holes 6215.

[0115] Each set of right-side mounting holes 153 can be modified to include one, two, three, five, or more right-side mounting holes 153. Correspondingly, the set of right-side fixing holes 6235 can be modified to include one, two, three, five, or more right-side fixing holes 6235.

[0116] As a variation of the first embodiment, the left mounting plate 42 is modified to have one, three, or more light source up / down / left adjustment slots 421. The right mounting plate 43 is modified to have one, three, or more light source up / down / right adjustment slots 431.

[0117] As a variation of the first embodiment, the upper part of the left side plate 211 of the rear bracket is modified to have two or more rear side plate up-and-down adjustment slots 2115. The upper part of the right side plate 213 of the rear bracket is modified to have two or more rear side plate up-and-down adjustment slots 2135.

[0118] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A camera flat field correction apparatus, characterized by, It includes a product placement bracket (2), a light source (5), and a camera (7); The product placement bracket (2) includes a rear product placement bracket (21) and a front product placement bracket (23) that are installed and fixed from back to front. The product placement bracket (21) includes a rear bracket top plate (215) located on top of it. The product placement bracket (23) includes a front bracket top plate (235) located on top of it; The light source (5) is installed and fixed between the product placement rear bracket (21) and the product placement front bracket (23), and is located below the rear bracket top plate (215) and the front bracket top plate (235); The camera (7) is mounted and fixed above the light source (5), the rear bracket top plate (215), and the front bracket top plate (235).

2. The camera flat field correction device according to claim 1, characterized in that, The camera flat field correction device also includes a fixed base plate (1) and a light source fixing bracket (4). The product placement bracket (21) and the product placement front bracket (23) are installed and fixed on the fixed base plate (1) from back to front; The light source fixing bracket (4) is installed and fixed on the fixing base plate (1) and located between the product placement rear bracket (21) and the product placement front bracket (23); The light source (5) is mounted and fixed on the light source mounting bracket (4).

3. The camera flat field correction device according to claim 2, characterized in that, The light source fixing bracket (4) includes a front and rear movable base plate (41), a left mounting plate (42) and a right mounting plate (43); The movable base plate (41) is installed on the fixed base plate (1); The left mounting plate (42) and the right mounting plate (43) are respectively installed and fixed on the left and right ends of the front and rear movable base plate (41); The light source (5) is installed and fixed between the left mounting plate (42) and the right mounting plate (43).

4. The camera flat field correction device according to claim 3, characterized in that, At least one light source up-down left adjustment slot (421) is provided on the left mounting plate (42), and at least one light source up-down right adjustment slot (431) is provided on the right mounting plate (43). The left end of the light source (5) is fixed on the left mounting plate (42) by bolting into the light source up-down left adjustment slot (421), and the right end of the light source (5) is fixed on the right mounting plate (43) by bolting into the light source up-down right adjustment slot (431).

5. The camera flat field correction device according to claim 3 or 4, characterized in that, The light source fixing bracket (4) also includes a light source front and rear movable mounting seat (40), which includes a mounting base plate (401), a slide rod front mounting seat (402), a slide rod rear mounting seat (403), at least two slide rods (404), a rotating screw (405), a screw threaded block (406), and a rotating handle (407). The mounting base plate (401) is installed and fixed at the middle position of the rear end of the fixed base plate (1); The front mounting base (402) and the rear mounting base (403) of the slide rod are respectively installed and fixed on the front end and rear end of the mounting base base plate (401); The slide rod rear mounting base (403) has a threaded hole that runs through the front and rear. The front and rear ends of at least two slide rods (404) are respectively mounted and fixed on the front mounting base (402) and the rear mounting base (403) of the slide rod, and the at least two slide rods (404) are arranged along the front-rear direction and are parallel to each other; The rotating screw (405) is provided with an external thread, which is threaded to the internal thread of the threaded hole of the slide rod rear mounting seat through the external thread of the rotating screw. The rotating screw (405) is rotatably mounted on the slide rod rear mounting seat (403). The rotating lead screw (405) is arranged along the front-to-back direction, located between at least two slide rods (404) and parallel to at least two slide rods (404); The lead screw block (406) has a through-hole for rotating lead screw and at least two through holes for sliding rods. At least two slide rods (404) are inserted into at least two slide rod through holes, and the screw thread block (406) can slide along the front-back direction on at least two slide rods (404); The screw thread block (406) is installed on the screw rod (405) by threading the external thread of the screw rod (405) to the internal thread of the screw thread block. The rotating handle (407) is mounted and fixed to the rear end of the rotating lead screw (405); The front and rear movable base plate (41) is installed and fixed on the top surface of the screw rod connecting block (406).

6. The camera flat field correction device according to claim 1, characterized in that, The camera flat field correction device also includes a fixed base plate (1) and a camera fixing bracket (6). The camera mounting bracket (6) is installed and fixed on the fixed base plate (1). The camera mounting bracket (6) includes a column (61) that is vertically installed and fixed on the fixed base plate (1) and a camera mounting plate (67) that is installed and fixed on the top of the column (61). The camera (7) is mounted and fixed on the camera mounting plate (67).

7. The camera flat field correction device according to claim 6, characterized in that, The camera mounting bracket (6) also includes an upper and lower slide rail mounting plate (63), an upper and lower slide rail (64), an upper and lower sliding slider (65), and a slider positioning rod (66). The upper and lower sliding rail mounting plates (63) are vertically installed and fixed to the top of the column (61); The upper and lower slide rails (64) are installed and fixed on the upper and lower slide rail mounting plate (63) along the vertical direction; The upper and lower sliding slider (65) is slidably mounted on the upper and lower sliding rail (64), and the side of the upper and lower sliding slider (65) is provided with a slider thread hole; The slider positioning rod (66) has an external thread, which is connected to the internal thread of the slider thread hole through the external thread of the slider positioning rod. The slider positioning rod (66) is screwed onto the upper and lower sliding sliders (65). Tightening the slider positioning rod (66) will make the upper and lower sliding sliders (65) stably fixed on the upper and lower sliding rails (64). The camera mounting plate (67) is mounted and fixed on the up and down sliding slider (65).

8. The camera flat field correction device according to claim 6 or 7, characterized in that, At least two sets of column mounting holes (15) are sequentially opened from back to front at the front end of the fixed base plate (1). Each set of column mounting holes (15) includes a set of column left mounting holes (151) located on the left side and a set of column right mounting holes (153) located on the right side. Each set of column left mounting holes (151) includes at least one column left mounting hole (151), and each set of column right mounting holes (153) includes at least one column right mounting hole (153). The camera mounting bracket (6) also includes a column fixing device (62), which includes a left column fixing block (621) and a right column fixing block (623). The left fixing block (621) of the column includes a left fixing base plate (6211) and a left fixing vertical plate (6213) extending vertically upward from the right end of the left fixing base plate (6211). A set of left fixing holes (6215) is provided on the left fixing base plate (6211), and the set of left fixing holes (6215) includes at least one left fixing hole (6215). The left fixed vertical plate (6213) is installed and fixed on the left side of the column (61); The right fixing block (623) of the column includes a right fixing base plate (6231) and a right fixing vertical plate (6233) extending vertically upward from the left end of the right fixing base plate (6231). A set of right fixing holes (6235) is provided on the right fixing base plate (6231), and the set of right fixing holes (6235) includes at least one right fixing hole (6235). The right fixed vertical plate (6233) is installed and fixed on the right side of the column (61); The column (61) is installed and fixed on the fixed base plate (1) by bolting into the left fixing hole (6215) and the left mounting hole (151) of the column, as well as the right fixing hole (6235) and the right mounting hole (153) of the column.

9. The camera flat field correction device according to claim 1, characterized in that, The camera flat field correction device also includes a fixed base plate (1), and at least two sets of rear bracket left side plate mounting holes (11) are provided at the left end of the fixed base plate (1). Each set of rear bracket left side plate mounting holes (11) includes at least one rear bracket left side plate mounting hole (11). At least two sets of rear bracket right side plate mounting holes (13) are provided at the right end of the fixed base plate (1), and each set of rear bracket right side plate mounting holes (13) includes at least one rear bracket right side plate mounting hole (13). The product placement bracket (21) includes a left side plate (211) and a right side plate (213). The bottom of the left side plate (211) of the rear bracket is vertically bent to extend a left side plate fixing block (2111), and a set of left side plate fixing holes (2113) of the rear bracket are provided on the left side plate fixing block (2111). The set of rear bracket left side plate fixing holes (2113) includes at least one rear bracket left side plate fixing hole (2113). The bottom of the right side plate (213) of the rear bracket is vertically bent to extend a right side plate fixing block (2131), and a set of right side plate fixing holes (2133) of the rear bracket are provided on the right side plate fixing block (2131). The set of rear bracket right side plate fixing holes (2133) includes at least one rear bracket right side plate fixing hole (2133). The top plate (215) of the rear bracket is installed and fixed between the left side plate (211) and the right side plate (213) of the rear bracket; The left side plate (211) of the rear bracket is installed and fixed on the fixed base plate (1) by bolting into the fixing hole (2113) and mounting hole (11) of the left side plate of the rear bracket. The right side plate (213) of the rear bracket is installed and fixed on the fixed base plate (1) by bolting into the fixing hole (2133) and mounting hole (13) of the right side plate of the rear bracket. At least two sets of front bracket left side plate mounting holes (12) are provided at the left end of the fixed base plate (1), and each set of front bracket left side plate mounting holes (12) includes at least one front bracket left side plate mounting hole (12). At least two sets of front bracket right side plate mounting holes (14) are provided at the right end of the fixed base plate (1), and each set of front bracket right side plate mounting holes (14) includes at least one front bracket right side plate mounting hole (14). The product placement front bracket (23) includes a front bracket left side plate (231) and a front bracket right side plate (233); A front bracket left side plate (231) is vertically bent at the bottom to extend a front bracket left side plate fixing block (2311), and a set of front bracket left side plate fixing holes (2313) are provided on the front bracket left side plate fixing block (2311). The set of front bracket left side plate fixing holes (2313) includes at least one front bracket left side plate fixing hole (2313); The bottom of the right side plate (233) of the front bracket is vertically bent to extend a right side plate fixing block (2331), and a set of right side plate fixing holes (2333) of the front bracket are provided on the right side plate fixing block (2331). The set of front bracket right side plate fixing holes (2333) includes at least one front bracket right side plate fixing hole (2333); The top plate (235) of the front bracket is installed and fixed between the left side plate (231) and the right side plate (233) of the front bracket; The left side plate (231) of the front bracket is installed and fixed on the fixed base plate (1) by bolting into the fixing hole (2313) and mounting hole (12) of the left side plate of the front bracket. The right side plate (233) of the front bracket is installed and fixed on the fixed base plate (1) by bolting into the fixing hole (2333) and mounting hole (14) of the right side plate of the front bracket.

10. The camera flat field correction device according to claim 1, characterized in that, The product placement bracket (21) includes a rear bracket left side plate (211) and a rear bracket right side plate (213), and the product placement bracket (23) includes a front bracket left side plate (231) and a front bracket right side plate (233). At least one rear support left side plate (211) is provided with a rear support left side plate up and down adjustment groove (2115), and at least one rear support right side plate (213) is provided with a rear support right side plate up and down adjustment groove (2135). The left end of the top plate (215) of the rear bracket is installed and fixed on the left side plate (211) of the rear bracket by bolting into the upper and lower adjustment groove (2115) of the left side plate of the rear bracket, and the right end of the top plate (215) of the rear bracket is installed and fixed on the right side plate (213) of the rear bracket by bolting into the upper and lower adjustment groove (2135) of the right side plate of the rear bracket. At least one front bracket left side plate (231) is provided with a front bracket left side plate up and down adjustment groove (2315), and at least one front bracket right side plate (233) is provided with a front bracket right side plate up and down adjustment groove (2335). The left end of the top plate (235) of the front bracket is fixed to the left side plate (231) of the front bracket by bolting into the upper and lower adjustment groove (2315) of the left side plate of the front bracket, and the right end of the top plate (235) of the front bracket is fixed to the right side plate (233) of the front bracket by bolting into the upper and lower adjustment groove (2335) of the right side plate of the front bracket.

Images