Turning mechanism and turning machine

Abstract

The present invention relates to the technical field of mounting equipment, and discloses a flipping mechanism and a flipping machine. The flipping mechanism includes a conveying track, a flipping mechanism, a lifting mechanism, and a carrying mechanism. The conveying track is used to transport trays carrying products; the flipping mechanism is arranged directly above the conveying track, and is used to flip the covered trays and the middle turntable 180 degrees, so that the products in the trays fall into the middle turntable. The flipping mechanism includes a flipping clamping mechanism and a flipping drive mechanism. The flipping clamping mechanism is used to clamp two clamps, and the flipping drive mechanism is used to drive the flipping clamping mechanism to perform a flipping movement. The lifting mechanism is arranged below the conveying track, and is used to carry the clamps located below, and lift the clamps and the tray to a height flush with the flipping clamping mechanism; the carrying mechanism is arranged above the conveying track, and carries the clamps, trays or middle turntables located above. The flipping mechanism can realize fully automatic flipping of products, improve efficiency, and avoid human intervention causing static electricity on the products.

Description

Technical Field

[0001] The present invention relates to the technical field of mounting equipment, and in particular to a turning mechanism and a turning machine. Background Art

[0002] During the production of printed circuit boards (PCBs) or flexible printed circuit boards (FPCs), some components need to be mounted on the PCB. Some components are placed in the tray in the opposite direction of their mounting orientation after production, requiring the components in the tray to be flipped over before being fed into the placement equipment for automated placement. Existing flipping is often done manually, and during this process, components can be contaminated with static electricity, which can affect the subsequent placement process. The flipping success rate is low, and the tray often needs to be rearranged after flipping, impacting production efficiency. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the present invention aims to provide a turning mechanism and a turning machine that can automatically complete the turning action, turn over the products to be mounted and place them in the middle turntable, thereby improving production efficiency.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows: a turning mechanism, comprising: a conveying track for transporting a material tray carrying products; a flipping mechanism, arranged directly above the conveying track, for flipping the covered material tray and the middle turntable 180 degrees, so that the products in the material tray fall into the middle turntable, comprising a flipping clamping mechanism and a flipping drive mechanism, the flipping clamping mechanism being used to clamp two clamps, and the flipping drive mechanism being used to drive the flipping clamping mechanism to perform a flipping movement; a jacking mechanism being arranged below the conveying track, for carrying the clamp located below, and lifting the clamp located below and the material tray on the flipping mechanism to a height flush with the flipping clamping mechanism; a carrying mechanism being arranged above the conveying track, for placing the clamp located above and the middle turntable onto the material tray on the jacking mechanism before flipping, or removing the clamp located above and the empty material tray after flipping.

[0005] Compared with the prior art, the present invention has the following advantages: the conveyor track can deliver the material tray carrying the product that needs to be turned over to the top of the lifting mechanism. The lifting mechanism lifts the clamping plate below, causing the material tray on the conveyor track to fall onto the clamping plate below, and lifts the material tray to a certain height so that the height of the clamping plate below and the material tray are flush with the height of the flip clamping mechanism. The conveyor mechanism then grabs a turntable and sequentially covers the turntable and the clamping plate located above on the material tray. The flip clamping mechanism clamps the two clamping plates, thereby clamping the covered material tray and the turntable located between the two clamping plates. Then, driven by the flip drive mechanism, the material tray flips 180 degrees, causing the product in the material tray to flip over and fall into the turntable, completing the product flipping. Finally, the conveyor mechanism removes the empty material tray and clamping plate on the turntable, and the conveyor track removes the turntable, completing the product flipping. The turning mechanism does not require human intervention during the entire turning process, can achieve fully automated turning, improve turning efficiency, and avoid human intervention causing static electricity on the product, thereby avoiding the impact of the introduced static electricity on the subsequent production process.

[0006] The above-mentioned flipping mechanism is capable of adjusting the width of the conveying track. The flipping mechanism and the lifting mechanism are respectively slidably arranged above and below the conveying track. The flipping mechanism and the lifting mechanism can slide along the width direction of the conveying track. A connecting rod mechanism is provided between the flipping mechanism and the lifting mechanism and the conveying track. The connecting rod mechanism is used to keep the relative position relationship of the flipping mechanism, the lifting mechanism and the flip clamping mechanism in the width direction of the conveying track unchanged when adjusting the width of the conveying track.

[0007] The above-mentioned tipping mechanism, the connecting rod mechanism includes two active connecting rods and a driven connecting rod, the driven connecting rod is rotatably arranged on the flipping mechanism or the jacking mechanism, the two ends of the driven connecting rod are respectively rotatably connected to the two active connecting rods, and the end of the active connecting rod facing away from the driven connecting rod is rotatably connected to the conveying track of the conveying track on the same side.

[0008] The above-mentioned turning mechanism, the turntable includes a bottom plate and a positioning plate, the positioning plate is provided with a receiving through hole for accommodating products, a plurality of guide columns are vertically provided on the bottom plate, and the bottom plate is also provided with pads equal to the number of the receiving through holes, the positioning plate is slidably connected to the guide columns, an elastic member is provided between the positioning plate and the bottom plate, and the pads are arranged in the receiving through holes in a one-to-one correspondence, when the positioning plate is not subjected to pressure, there is a certain gap between the positioning plate and the bottom plate under the action of the elastic member, so that the end face of the pad is lower than the surface of the positioning plate; when the positioning plate is subjected to pressure, the gap between the positioning plate and the bottom plate is eliminated, so that the end face of the pad is higher than the surface of the positioning plate.

[0009] The above-mentioned turning mechanism, the turntable also includes a vacuum diverter plate, the vacuum diverter plate is arranged on the side of the base plate facing away from the positioning plate, a vacuum cavity is formed between the vacuum diverter plate and the base plate, the pad is provided with an air duct connected to the vacuum cavity, the vacuum diverter plate is provided with a vacuum interface connected to the vacuum cavity, the lifting mechanism is provided with a vacuum joint matching the vacuum interface, and the splint is provided with an avoidance hole for avoiding the vacuum joint.

[0010] In the above-mentioned turnover mechanism, a plurality of first magnets are embedded on the outer surface of the clamping plate, and a plurality of second magnets are embedded on the contact surfaces of the lifting mechanism and the carrying mechanism with the clamping plate, and the magnetic properties of the first magnet and the second magnet are opposite.

[0011] The above-mentioned turning mechanism has a positioning mechanism provided above the conveying track, and the positioning mechanism is used to adjust the material tray on the lifting mechanism to a preset position.

[0012] In the above-mentioned turnover mechanism, static eliminators are provided at the entrance and exit of the conveying track.

[0013] In the above-mentioned turning mechanism, a photographing mechanism is provided above the conveying track, and the photographing mechanism is used to take a photograph of the turned turntable.

[0014] A tray turning machine includes the above-mentioned tray turning mechanism, material tray loading mechanism, material tray unloading mechanism, turntable loading mechanism and turntable receiving mechanism, the material tray loading mechanism and the turntable receiving mechanism are arranged at both ends of the conveying track of the tray turning mechanism, and the material tray unloading mechanism and the turntable loading mechanism are arranged on one side of the tray turning mechanism.

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the three-dimensional structure of the tray turning machine according to an embodiment of the present invention;

[0017] Figure 2 Schematic diagram of the three-dimensional structure of the turning mechanism according to an embodiment of the present invention;

[0018] Figure 3 for Figure 2 A magnified schematic diagram of point A in the middle;

[0019] Figure 4 Schematic diagram of the three-dimensional structure of the conveying track according to an embodiment of the present invention;

[0020] Figure 5 Schematic diagram of the three-dimensional structure of the flip mechanism according to an embodiment of the present invention;

[0021] Figure 6 Schematic diagram of the three-dimensional structure of the jacking mechanism according to an embodiment of the present invention;

[0022] Figure 7 for Figure 6 A magnified schematic diagram of point B in the middle;

[0023] Figure 8 A side view of a lifting mechanism according to an embodiment of the present invention;

[0024] Figure 9 Schematic diagram of the three-dimensional structure of the turntable in an embodiment of the present invention;

[0025] Figure 10 Schematic diagram of the exploded structure of the turntable according to an embodiment of the present invention;

[0026] Figure 11 Schematic diagram of the three-dimensional structure of the carrying mechanism according to an embodiment of the present invention;

[0027] Figure 12 is a side view of a carrying mechanism according to an embodiment of the present invention;

[0028] Figure 13 The figure is a schematic diagram of the turning process of the turning mechanism according to an embodiment of the present invention.

[0029] Description of Figure Numbers:

[0030] 100 conveyor rail, 110 conveyor rail, 120 width adjustment mechanism, 121 adjustment handle, 122 adjustment screw, 130 connecting rod mechanism, 131 driven connecting rod, 132 active connecting rod, 133 connecting rod, 140 positioning mechanism, 141 positioning push plate, 142 positioning cylinder, 150 static eliminator, 160 light source, 200 flip mechanism, 210 flip drive mechanism, 211 self-adjusting slide rail, 220 flip clamping mechanism, 221 flip bracket, 222 flip clamping cylinder, 223 flip clamping finger, 230 clamping plate, 231 first magnet, 232 clamping seat, 233 avoidance hole, 300 lifting mechanism, 310 top Lifting bracket, 320 lifting drive mechanism, 330 lifting platform, 331 vacuum joint, 332 second magnet, 333 shaking cylinder, 400 carrying mechanism, 410Y-axis drive mechanism, 420X-axis drive mechanism, 430Z-axis drive mechanism, 440 turntable clamp, 450 splint clamp, 500 material tray loading mechanism, 600 material tray unloading mechanism, 700 turntable loading mechanism, 800 turntable receiving mechanism, 900 turntable, 910 positioning plate, 911 accommodating through hole, 920 bottom plate, 921 pad, 922 elastic part, 923 guide column, 930 vacuum diverter plate, 931 vacuum chamber, 932 vacuum interface. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below. Figure 1 and Figure 2 An embodiment of the present invention provides a tray turning mechanism, comprising a conveyor track 100, a flipping mechanism 200, a lifting mechanism 300, and a carrying mechanism 400. The conveyor track 100 is used to transport trays carrying products. The flipping mechanism 200 is disposed directly above the conveyor track 100 and is used to flip the covered trays and the intermediate turntable 900 180 degrees, allowing the products in the trays to fall into the intermediate turntable 900. The flipping mechanism includes a flipping clamping mechanism 220 and a flipping drive mechanism 210. The flipping clamping mechanism 220 is used to clamp two clamping plates 230, and the flipping drive mechanism 210 is used to drive the flipping clamping mechanism 220 to perform a flipping motion. The lifting mechanism 300 is disposed below the conveyor track 100 and is used to support the clamping plates 230 located below and lift the clamping plates 230 located below and the tray on the flipping mechanism 200 to a height flush with the flipping clamping mechanism 220. The carrying mechanism 400 is arranged above the conveying track 100, and is used to place the upper clamping plate 230 and the middle turntable 900 on the material tray of the lifting mechanism 300 before flipping; or to remove the upper clamping plate 230 and the empty material tray after flipping.

[0032] In the tray turning mechanism of this embodiment of the present invention, the conveyor track 100 transports the tray to the bottom of the flipping mechanism 200. The lifting mechanism 300 then lifts the lower clamping plate 230, bringing it into contact with the tray on the conveyor track 100 and raising the tray to a certain height, so that the lower clamping plate 230 and the tray are flush with the height of the flipping clamping mechanism 220. The carrier mechanism 400 then places the upper clamping plate 230 and the intermediate turntable 900 on the tray. The flipping clamping mechanism 220 clamps the two clamping plates 230, clamping the covered tray and the intermediate turntable 900 between them. The lifting mechanism 300 then descends, and the flipping clamping mechanism 220, driven by the flipping drive mechanism 210, flips 180 degrees, turning the product on the tray over and dropping it into the intermediate turntable 900, completing the tray turning. Finally, the lifting mechanism 300 rises to catch the clamping plate 230 and the turntable 900 below, the flipping clamping mechanism 220 releases the two clamping plates 230, and the carrying mechanism 400 removes the clamping plate 230 and the empty tray located above. Then the lifting mechanism 300 descends to put the turntable 900 back on the conveying track 100, so that the product after flipping can be sent to the unloading mechanism or the next device along with the turntable 900. The flipping mechanism can automatically complete the flipping of the product, improve the flipping efficiency, and no human intervention is required during the flipping process. The tray and the turntable 900 can be automatically sent to the flipping mechanism 200, which can avoid human intervention and static electricity on the product, which affects the subsequent production process. It can be understood that the flipping mechanism of the embodiment of the present invention can also be used to flip the product in the turntable 900 back into the tray.

[0033] Reference Figure 2 and Figure 4 In this embodiment, in order to accommodate trays of different widths, the width of the conveyor track 100 is adjustable. The conveyor track 100 includes two parallel conveyor tracks 110, one of which is fixedly mounted on the frame, and the other conveyor track 110 is slidably mounted on the frame via a width adjustment mechanism 120. The width adjustment mechanism 120 can adjust the distance between the movable conveyor track 110 and the fixed conveyor track 110. The width adjustment mechanism 120 includes two adjusting screw rods 122 and at least two guide rails. The directions of the adjusting screw rods 122 and the guide rails are parallel to the width direction of the conveyor track 100. The movable conveyor track 110 is connected to the screw nut on the adjusting screw rod 122 and the slider on the guide rail. The two adjusting screw rods 122 are connected by a synchronous belt drive. An adjusting handle 121 is provided at the outer end of the adjusting screw rod 122. The width of the conveyor track 100 can be adjusted by rotating the adjusting handle 121. It can be understood that the conveyor track 100 can transport trays via a conveyor belt or a conveyor chain. Figure 2 and Figure 4 In this embodiment, a synchronous belt mechanism is provided on the inner side of the conveying track 100 , and the synchronous belt mechanism can be driven by a motor to rotate in a circular manner along the conveying direction of the conveying track 100 .

[0034] Reference Figure 2 、 Figure 4 、 Figure 5 and Figure 7 In order to prevent the relative position relationship between the lifting mechanism 300 and the flipping mechanism 200 from changing with the position change of the movable conveying track 110 after the width of the conveying track 100 is adjusted, in this embodiment, the flipping mechanism 200 and the lifting mechanism 300 are respectively slidably arranged above and below the conveying track 100, and the flipping mechanism 200 and the lifting mechanism 300 can slide in the width direction of the conveying track 100. A connecting rod mechanism 130 is provided between the flipping mechanism 200 and the lifting mechanism 300 and the conveying track 100, and the connecting rod mechanism 130 can move the conveying track 100. The movement of 100 in width is transmitted to the flipping mechanism 200 and the lifting mechanism 300, so that the flipping mechanism 200 and the lifting mechanism 300 can move synchronously with the change of the width of the conveying track 100 to ensure that the relative position relationship between the flipping mechanism 200 and the lifting mechanism 300 remains unchanged, thereby avoiding the misalignment in the width direction between the lifting mechanism 300 and the flipping mechanism 200, resulting in the flipping clamping mechanism 220 being unable to stably clamp the clamping plate 230 on the lifting mechanism 300. The connecting rod mechanism 130 can improve the product change efficiency of the turnover mechanism and further improve production efficiency.

[0035] Reference Figure 4 and Figure 5Taking the connecting rod mechanism 130 between the flipping mechanism 200 and the conveying track 100 as an example, the bracket of the flipping mechanism 200 is slidably set above the conveying track 100 through the self-adjusting slide rail 211 in the width direction. The connecting rod mechanism 130 includes a driven connecting rod 131 and two active connecting rods 132. The center of the driven connecting rod 131 is rotatably set on the bracket of the flipping mechanism 200. The two ends of the driven connecting rod 131 are respectively rotatably connected to one end of the two active connecting rods 132, and the other ends of the two active connecting rods 132 are respectively rotatably connected to the conveying track 110 on the corresponding side. In this embodiment, in order to ensure that the flipping mechanism 200 and the lifting mechanism 300 can always remain in the middle of the conveying track 100 when adjusting the width of the conveying track 100, the rotating shaft of the driven link 131 is located on the central axis of the flipping mechanism 200 and the lifting mechanism 300 in the conveying direction of the conveying track 100, the two active links 132 are equal in length and remain parallel, the two active links 132 form two parallel sides of a parallelogram structure, and the rotating shaft of the driven link 131 is located at the rotational symmetry center of the parallelogram. When the width of the conveying track 100 changes, the two active connecting rods 132 swing in parallel with the width change of the conveying track 100, thereby driving the driven connecting rod 131 to swing. Since the center of rotational symmetry will always bisect the diagonal line during the deformation of the parallelogram, the rotating shaft of the driven connecting rod 131 can be kept on the central axis of the conveying track 100, so that the flipping mechanism 200 and the lifting mechanism 300 are always located in the center of the conveying track 100, so that the flipping mechanism 200 and the lifting mechanism 300 can adaptively adjust their own positions according to the width of the conveying track 100, ensuring that the flipping clamping mechanism 220 can stably clamp the covered material tray and the middle turntable 900 through the clamping plate 230. Figure 2 and Figure 4 In this embodiment, a connecting rod 133 is provided on the conveyor track 110. The active connecting rod 132 is rotatably connected to the conveyor track 110 via the connecting rod 133. The end of the active connecting rod 132 facing away from the driven connecting rod 131 is rotatably connected to the end of the connecting rod 133 facing away from the conveyor track 110. It will be understood that by properly adjusting the length of the connecting rod 133, the length of the active connecting rod 132, the position of the rotating shaft of the driven connecting rod 131, and the length ratio of the two lever arms of the driven connecting rod 131, it is possible to maintain the flipping mechanism 200 and the lifting mechanism 300 at a position slightly left or slightly right of the center of the conveyor track 100 to accommodate some special tray structures.

[0036] Reference Figure 4In this embodiment, static eliminators 150 are installed at both the entrance and exit of the conveyor track 100. These eliminators are used to remove static electricity from products flowing into and out of the trays and on the intermediate turntable 900, preventing static electricity carried by the products from affecting the subsequent placement process. In this embodiment, the eliminators 150 are static eliminators. One end of the static eliminator is fixed to one conveyor track 110, and the other end passes through a bracket on the other conveyor track 110 with a circular hole matching the diameter of the static eliminator. This prevents the static eliminator from interfering with the width adjustment of the conveyor track 100.

[0037] Reference Figure 2 and Figure 4 In some embodiments, to ensure that the material tray and the intermediate turntable 900 can be maintained in the center of the two clamping plates 230 when the tilting plate clamping mechanism clamps them, a positioning mechanism 140 is further provided above the conveyor track 100. The positioning mechanism 140 is used to align the material tray on the lifting mechanism 300 to the center of the clamping plates 230. In this embodiment, the positioning mechanism 140 includes a pair of positioning push plates 141 and a pair of positioning cylinders 142. The two positioning cylinders 142 and the two positioning push plates 141 are respectively provided on both sides of the tilting mechanism 200 in the width direction. The piston rods of the positioning push plates 141 and the positioning cylinders 142 are connected. The positioning push plates 141 can be driven by the positioning cylinders 142 to perform a pushing action toward the center of the conveyor track 100. When the lifting mechanism 300 lifts the material tray to be flush with the flipping mechanism 200, the two positioning push plates 141 push the edge of the material tray toward the center of the conveying track 100 under the drive of their respective positioning cylinders 142, thereby pushing the material tray on the lower clamping plate 230 to the center of the clamping plate 230.

[0038] Reference Figure 6 and Figure 8 In this embodiment, the lifting mechanism 300 includes a lifting bracket 310, a lifting drive mechanism 320, and a lifting platform 330. The lifting platform 330 is slidably mounted on the lifting bracket 310. The lifting drive mechanism 320 is mounted on the lifting bracket 310. The lifting platform 330 can be raised and lowered under the drive of the lifting drive mechanism 320. The two ends of the lifting bracket 310 are slidably connected to the two conveyor rails 110 via two self-adjusting slide rails 211, and are transmission-connected to the conveyor rails 110 on the corresponding sides via a connecting rod mechanism 130. It is understood that the lifting platform 330 can be slidably connected to the lifting bracket 310 via slide rails or slide rods, and the lifting drive mechanism 320 can be composed of a screw pair and a motor, or driven by a cylinder.

[0039] Reference Figure 3To facilitate the fixing of the splint 230 to the lifting mechanism 300 or the carrying mechanism 400, a plurality of first magnets 231 are embedded on the outer surface of the splint 230, and a plurality of second magnets 332 are embedded on the contact surfaces of the lifting mechanism 300 and the carrying mechanism 400 where the splint 230 contacts. The magnetic properties of the first magnet 231 and the second magnet 332 are opposite. Taking the lifting mechanism 300 as an example, the second magnet 332 is embedded on the upper surface of the lifting platform 330. When the lifting platform 330 contacts the splint 230 below, the lifting platform 330 can fix the splint 230 on the lifting platform 330 through the magnetic force between the second magnet 332 and the first magnet 231, thereby preventing the splint 230 from shaking when the lifting platform 330 is raised or lowered, which would cause the flap clamping mechanism to fail to properly clamp the two ends of the splint 230.

[0040] Reference Figure 9 and Figure 10 In this embodiment, in order to improve the success rate of product flipping and prevent the product from not accurately falling into the corresponding receiving groove on the turntable 900 during the process of falling from the material tray, the turntable 900 includes a bottom plate 920 and a positioning plate 910. The positioning plate 910 is provided with a receiving through hole 911 for receiving the product. A plurality of guide pillars 923 are vertically provided on the bottom plate 920. The bottom plate 920 is also provided with pads 921 equal to the number of the receiving through holes 911. The positioning plate 910 and the guide pillars 923 are slidably connected, and an elastic member 922 is provided between the positioning plate 910 and the bottom plate 920. The pads 921 are arranged in a one-to-one correspondence in the receiving through holes 911, serving as the bottom surface of the receiving through holes 911, and cooperate with the receiving through holes 911 to form a receiving groove for receiving the product. Under the elastic force of the elastic member 922, when the positioning plate 910 is no longer under pressure, there is a certain gap between the positioning plate 910 and the bottom plate 920, so that the end face of the cushion block 921 is lower than the surface of the positioning plate 910. When the positioning plate 910 is under pressure, the gap between the positioning plate 910 and the bottom plate 920 is eliminated, so that the end face of the cushion block 921 is higher than the surface of the positioning plate 910.

[0041] Reference Figure 13When turning over, one side of the positioning plate 910 of the transfer plate contacts the material tray, and the transfer tray 900 covers the material tray. The receiving grooves on the transfer tray 900 correspond to and fit with the receiving grooves on the material tray to form independent cavities. When the flipping clamping mechanism 220 clamps the covered material tray and the transfer tray 900 through the clamping plate 230, the pad 921 in the transfer tray 900 will protrude toward the material tray and extend into the receiving groove on the material tray, compressing the product's movement space, thereby shortening the falling distance of the product after turning over, reducing the probability of the product shifting horizontally during the falling process, and ensuring that the product can stably fall into the receiving groove of the transfer tray 900, thereby improving the success rate of turning over. After flipping, as the flip clamping mechanism 220 is released, the pad 921 falls back into the receiving groove of the central turntable 900. The product that has landed on the pad 921, supported by the pad 921, falls stably into the receiving groove of the central turntable 900 along with the pad 921. It is understood that matching positioning pins and positioning holes are preferably provided on the contact surface of the material tray and the central turntable 900 to ensure that the material tray and the central turntable 900 are aligned when closed, thereby ensuring the alignment of the receiving groove.

[0042] Reference Figure 3 、 Figure 7 and Figure 10 In some embodiments, to further improve the success rate of flipping, a vacuum manifold plate 930 is provided on the back of the base plate 920. A vacuum chamber 931 is formed between the vacuum manifold plate 930 and the base plate 920. An air passage communicating with the vacuum chamber 931 is provided on the pad 921, and a vacuum port 932 communicating with the vacuum chamber 931 is provided on the vacuum manifold plate 930. A vacuum connector 331 that mates with the vacuum port 932 is provided on the lifting platform 330 of the lifting mechanism 300, and an avoidance hole 233 for the vacuum connector 331 is provided on the clamping plate 230. After the turnaround is completed, the lifting mechanism 300 is lifted, so that the lifting platform 330 contacts the clamping plate 230 below. At the same time, the vacuum connector 331 passes through the avoidance hole 233 and communicates with the vacuum chamber 931, thereby extracting the air in the vacuum chamber 931 and allowing the product to be adsorbed on the pad 921, thereby further increasing the probability of the product falling into the bottom center of the receiving groove in the turntable 900 and further improving the success rate of the turnaround. Figure 7 and Figure 8 In some embodiments, a shaking cylinder 333 is also provided on the lifting platform 330. The shaking cylinder 333 can slightly lift the splint 230, thereby driving the turntable 900 to shake slightly so that the product falls to the bottom of the receiving groove of the turntable 900, and cooperates with vacuum adsorption to further improve the success rate of turning over.

[0043] Reference Figure 5In this embodiment, the flip mechanism 200 includes a pair of flip drive mechanisms 210 and a pair of flip clamping mechanisms 220. The two flip drive mechanisms 210 and the two flip clamping mechanisms 220 are respectively arranged on both sides of the lifting mechanism 300 in the transport direction of the conveyor track 100. The flip clamping mechanisms 220 can clamp the ends of the clamping plates 230 with claws, thereby clamping the material tray and the intermediate turntable 900 between the clamping plates 230. The flip drive mechanism 210 includes a flip drive motor and a flip reducer. The flip clamping mechanism 220 includes a flip bracket 221 and a flip clamping cylinder 222. The flip bracket 221 is rotatably connected to the mounting base of the flip drive motor and the flip reducer. The output shaft of the flip drive motor is connected to the rotating shaft of the flip bracket 221 via the flip reducer. The mounting base of the flip drive motor and the flip reducer is slidably arranged above the conveyor track 100 via a self-adjusting slide rail 211 and is transmission-connected to the conveyor track 110 via a connecting rod mechanism 130. In this embodiment, each flip clamping mechanism 220 includes two flip clamping cylinders 222, which are symmetrically arranged on the side of the flip bracket 221 facing away from the flip drive mechanism 210. Flip clamping fingers 223 are provided on the flip clamping cylinders 222. The flip clamping cylinders 222 drive the flip clamping fingers 223 to perform a clamping action, thereby clamping the two corners of the clamping plate 230 in the width direction. In this embodiment, the flip clamping cylinders 222 drive the flip clamping fingers 223 to perform a 90-degree flipping action. After the clamping plate 230 is released, the flip clamping fingers 223 are vertically positioned on both sides of the clamping plate 230 in the conveying direction of the conveyor track 100, thereby preventing the clamping fingers from interfering with the clamping plate 230 being clamped away by the carrier mechanism 400 or falling onto the lifting mechanism 300.

[0044] It is understandable that the transport mechanism 400 can transport the clamping plate 230, the empty tray or the turntable 900 by means of clamping, magnetic attraction or vacuum adsorption. Figure 1 、 Figure 11 and Figure 12 In this embodiment, the transport mechanism 400 includes a Y-axis drive mechanism 410, an X-axis drive mechanism 420, a Z-axis drive mechanism 430, a middle turntable clamp 440 and a splint clamp 450. The Y-axis drive mechanism 410 is arranged on the frame of the equipment, the X-axis drive mechanism 420 is arranged on the Y-axis drive mechanism 410, the Z-axis drive mechanism 430 is arranged on the X-axis drive mechanism 420, and the middle turntable clamp 440 and the splint clamp 450 are arranged on the Z-axis drive mechanism 430. The middle turntable clamp 440 and the splint clamp 450 can perform three-axis motion of X, Y and Z axes under the drive of the Y-axis drive mechanism 410, the X-axis drive mechanism 420 and the Z-axis drive mechanism 430, so as to complete the loading and unloading of empty material trays and the middle turntable 900. Figure 2 and Figure 3In this embodiment, a boss-shaped clamping seat 232 is provided on the outer surface of the clamping plate 230 to facilitate clamping by the clamping plate jaws 450. It is understandable that the clamping plate jaws 450 and the turntable jaws 440 can be pneumatic jaws or electric jaws, and the clamping plate jaws 450 can preferably be lifted and lowered to a certain extent by the jaw lifting mechanism, so that after the carrier mechanism 400 clamps the clamping plate 230, the clamping plate 230 can be lifted to a certain height to avoid interference between the clamping plate 230 and the turntable 900 or the material tray. It is understandable that the Y-axis drive mechanism 410, the X-axis drive mechanism 420, and the Z-axis drive mechanism 430 can be a linear drive platform composed of a slide rail, a guide rod, a synchronous belt, a screw pair, and a motor.

[0045] In some embodiments, in order to check whether the products on the turntable 900 are turned over well after turning over, a photographing mechanism is further provided above the conveying track 100. The photographing mechanism can take a picture of the turntable 900 after turning over, and use a visual algorithm to determine whether the products are turned over and fall well into the receiving slot of the turntable 900. It is understandable that the photographing mechanism can also be used to take a picture and position the material tray before turning over, so that the carrying mechanism 400 can accurately align the turntable 900 and cover it on the material tray. It is understandable that the photographing mechanism should be provided on the Z-axis drive mechanism 430 of the carrying mechanism 400, so that it can move with the splint clamp 450 and the turntable clamp 440 to take pictures of material trays or turntables 900 of different sizes. Reference Figure 4 In this embodiment, a strip-shaped light source 160 is provided on each of the two conveying tracks 110 to provide a suitable lighting environment for photographing the material tray or the turntable 900 .

[0046] Reference Figure 1The tray turning machine of the embodiment of the present invention includes the above-mentioned tray turning mechanism, and also includes a tray loading mechanism 500, a tray unloading mechanism 600, a turntable loading mechanism 700, and a turntable receiving mechanism 800. The tray loading mechanism 500 and the turntable receiving mechanism 800 are respectively arranged at both ends of the conveyor track 100. The tray loading mechanism 500 can separate the stacked trays and send them into the conveyor track 100 through a conveyor mechanism such as a conveyor belt. The turntable receiving mechanism 800 can receive the turntables 900 flowing out of the conveyor track 100 and stack the turntables 900 into a turntable stack. The tray unloading mechanism 600 and the turntable loading mechanism 700 are respectively used to stack empty trays after turning over and inverted turntables 900 before turning over. The tray unloading mechanism 600 and the turntable loading mechanism 700 preferably adopt a liftable stacking platform. It is understood that the specific structures of the tray loading mechanism 500, the tray unloading mechanism 600, the intermediate turntable loading mechanism 700, and the intermediate turntable receiving mechanism 800 are common knowledge in the art and are not described in detail here. It is also understood that in some embodiments, the tray turning machine can eliminate the tray loading mechanism 500 and the intermediate turntable receiving mechanism 800, and the conveyor track 100 can be directly connected to the production line to complete the online product turning.

[0047] It should be noted that in the description of the present invention, if there are any descriptions of directions, such as up, down, front, back, left, right, etc., the directions or positional relationships indicated are all based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed or operate in a specific direction, and cannot be understood as a limitation on the present invention.

[0048] In the description of the present invention, "several" means one or more, "more" means two or more, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. If there are descriptions of "first," "second," and so on, these are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0049] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0050] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A turnover mechanism, characterized in that: include: A conveyor track (100) for transporting trays carrying products; The flip mechanism (200) is arranged directly above the conveying track (100) and is used to flip the covered material tray and the middle turntable (900) by 180 degrees so that the product in the material tray falls into the middle turntable (900). The flip mechanism (200) comprises a flip clamping mechanism (220) and a flip driving mechanism (210). The flip clamping mechanism (220) is used to clamp the two clamping plates (230), and the flip driving mechanism (210) is used to drive the flip clamping mechanism (220) to perform flipping motion. a lifting mechanism (300) disposed below the conveying track (100) and configured to carry the clamping plate (230) located below and to lift the clamping plate (230) located below and the material tray on the flipping mechanism (200) to a height flush with the flipping clamping mechanism (220); a carrying mechanism (400) disposed above the conveying track (100) and used for placing the clamping plate (230) and the middle turntable (900) located above onto the material tray on the lifting mechanism (300) before flipping, or for removing the clamping plate (230) and the empty material tray after flipping; The width of the conveying track (100) is adjustable, the flipping mechanism (200) and the lifting mechanism (300) are respectively slidably arranged above and below the conveying track (100), the flipping mechanism (200) and the lifting mechanism (300) can slide along the width direction of the conveying track (100), and a connecting rod mechanism (130) is provided between the flipping mechanism (200) and the lifting mechanism (300) and the conveying track (100), and the connecting rod mechanism (130) is used to keep the relative position relationship of the flipping mechanism (200), the lifting mechanism (300) and the flip clamping mechanism (220) in the width direction of the conveying track (100) unchanged when the width of the conveying track (100) is adjusted; The middle turntable (900) includes a bottom plate (920) and a positioning plate (910), wherein the positioning plate (910) is provided with a receiving through hole (911) for receiving a product, and a plurality of guide columns (923) are vertically provided on the bottom plate (920), and the bottom plate (920) is also provided with pads (921) equal in number to the receiving through holes (911), the positioning plate (910) is slidably connected to the guide columns (923), and an elastic member (922) is provided between the positioning plate (910) and the bottom plate (920), and the pads (921) are arranged in the accommodating through hole (911) in a one-to-one correspondence. When the positioning plate (910) is not subjected to pressure, a certain gap exists between the positioning plate (910) and the bottom plate (920) under the action of the elastic member (922), so that the end surface of the pad (921) is lower than the surface of the positioning plate (910); when the positioning plate (910) is subjected to pressure, the gap between the positioning plate (910) and the bottom plate (920) is eliminated, so that the end surface of the pad (921) is higher than the surface of the positioning plate (910).

2. The turnover mechanism according to claim 1, characterized in that: The connecting rod mechanism (130) includes two active connecting rods (132) and a driven connecting rod (131). The driven connecting rod (131) is rotatably arranged on the flip mechanism (200) or the lifting mechanism (300). The two ends of the driven connecting rod (131) are respectively rotatably connected to the two active connecting rods (132). The end of the active connecting rod (132) facing away from the driven connecting rod (131) is rotatably connected to the conveying track (110) of the conveying track (100) on the same side.

3. The turnover mechanism according to claim 1, characterized in that: The central turntable (900) further includes a vacuum diverter plate (930), which is arranged on the side of the bottom plate (920) facing away from the positioning plate (910), and a vacuum cavity (931) is formed between the vacuum diverter plate (930) and the bottom plate (920). The pad (921) is provided with an air passage communicating with the vacuum cavity (931), the vacuum diverter plate (930) is provided with a vacuum interface (932) communicating with the vacuum cavity (931), the lifting mechanism (300) is provided with a vacuum joint (331) matching the vacuum interface (932), and the clamping plate (230) is provided with an avoidance hole (233) for avoiding the vacuum joint (331).

4. The turnover mechanism according to claim 1, characterized in that: A plurality of first magnets (231) are embedded on the outer surface of the clamping plate (230), and a plurality of second magnets (332) are embedded on the contact surfaces of the lifting mechanism (300) and the carrying mechanism (400) with the clamping plate (230), wherein the magnetic properties of the first magnets (231) and the second magnets (332) are opposite.

5. The turnover mechanism according to claim 1, characterized in that: A positioning mechanism (140) is provided above the conveying track (100), and the positioning mechanism (140) is used to adjust the material tray on the lifting mechanism (300) to a preset position.

6. The turnover mechanism according to claim 1, characterized in that: Static eliminators (150) are provided at both the entrance and exit of the conveying track (100).

7. The turning mechanism according to claim 1, characterized in that: A photographing mechanism is provided above the conveying track (100), and the photographing mechanism is used to take a photograph of the turned-over turntable (900).

8. A tray turning machine, characterized in that: The invention comprises a turning mechanism according to any one of claims 1 to 7, a material tray loading mechanism (500), a material tray unloading mechanism (600), a middle turntable loading mechanism (700) and a middle turntable receiving mechanism (800), wherein the material tray loading mechanism (500) and the middle turntable receiving mechanism (800) are arranged at both ends of a conveying track (100) of the turning mechanism, and the material tray unloading mechanism (600) and the middle turntable loading mechanism (700) are arranged on one side of the turning mechanism.

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