Pan overturning mechanism and pan overturning machine

Abstract

The invention relates to the technical field of mounting equipment, and discloses a tray dumping mechanism and a tray dumping machine, and the tray dumping mechanism comprises a conveying track, a tray dumping mechanism, a jacking mechanism and a carrying mechanism. The conveying track is used for conveying a material tray loaded with products; and the turnover mechanism is arranged right above the conveying track and is used for turning over the covered trays and the middle rotating disc by 180 degrees, so that the products in the trays fall into the middle rotating disc. The turnover mechanism comprises a turnover clamping mechanism and a turnover driving mechanism, the turnover clamping mechanism is used for clamping the two clamping plates, and the turnover driving mechanism is used for driving the turnover clamping mechanism to conduct turnover motion. The jacking mechanism is arranged below the conveying track and used for bearing the clamping plate located below and lifting the clamping plate and the material disc to the height flush with the overturning clamping mechanism. The carrying mechanism is arranged above the conveying track and carries the clamping plate, the material disc or the middle rotating disc located above. According to the tray overturning mechanism, full-automatic tray overturning of products can be achieved, the efficiency is improved, and the situation that the products carry static electricity due to human intervention is avoided.

Description

Technical Field

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

[0002] During the production of circuit boards or flexible circuit boards, some components need to be mounted on the circuit boards. After production, some components are placed in the tray in the opposite direction to the installation direction. The components in the tray need to be turned over before they can be sent to the placement equipment for automatic placement. The existing flipping work is often done manually. During the flipping process, the components may be contaminated with static electricity, which will affect the subsequent placement process. The flipping success rate is low, and the tray often needs to be rearranged after flipping, which affects production efficiency. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a turntable mechanism and a turntable machine, which can automatically complete the turntable 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 tray 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 is used to clamp two clamps, and the flipping drive mechanism is used to drive the flipping clamping mechanism to perform a flipping movement; a lifting mechanism, arranged below the conveying track, for carrying the clamps located below, and lifting the clamps located below and the material tray on the flipping mechanism to a height flush with the flipping clamping mechanism; a carrying mechanism, arranged above the conveying track, for placing the clamps located above and the middle turntable on the material tray on the lifting mechanism before flipping, or removing the clamps located above and the empty material tray after flipping.

[0005] Compared with the prior art, the beneficial effect of the present invention is that the conveying track can deliver the material tray carrying the product that needs to be turned over to the top of the lifting mechanism, and the lifting mechanism lifts the clamping plate below, so that the material tray on the conveying track falls on 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 is flush with the height of the flip clamping mechanism. Then the transport mechanism grabs a turntable, and sequentially covers the turntable and the clamping plate located above on the material tray, and the flip clamping mechanism clamps the two clamping plates, thereby clamping the covered material tray and the turntable located between the two clamping plates, and then flips 180 degrees under the drive of the flip drive mechanism, so that the product in the material tray is turned over and falls into the turntable, completing the flipping of the product. Finally, the transport mechanism takes away the empty material tray and clamping plate on the turntable together, and the conveying track flows the turntable out, completing the flipping of the product. The turning mechanism does not require human intervention during the turning process, can realize fully automatic turning, improve turning efficiency, and avoid human intervention causing the product to carry static electricity, 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 arranged 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 the product, a plurality of guide columns are vertically arranged on the bottom plate, and pads equal in number to the receiving through holes are also arranged on the bottom plate, the positioning plate is slidably connected to the guide columns, an elastic member is arranged between the positioning plate and the bottom plate, 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 passage 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 clamping plate is provided with an avoidance hole for avoiding the vacuum joint.

[0010] In the above-mentioned turning 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 that are in contact with the clamping plate, and the magnetic properties of the first magnet and the second magnet are opposite.

[0011] In the above-mentioned tray turning mechanism, a positioning mechanism is arranged 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 turntable mechanism, a photographing mechanism is arranged above the conveying track, and the photographing mechanism is used to take a picture of the turntable after being turned over.

[0014] A tray turning machine comprises the above-mentioned tray turning mechanism, a material tray loading mechanism, a material tray unloading mechanism, a central turntable loading mechanism and a central turntable receiving mechanism, wherein the material tray loading mechanism and the central 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 central turntable loading mechanism are arranged on one side of the tray turning mechanism.

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

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

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the turning mechanism of an embodiment of the present invention;

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

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

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the flipping mechanism of an embodiment of the present invention;

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the jacking mechanism of an embodiment of the present invention;

[0022] Figure 7 for Figure 6 The enlarged 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] Fig. 9 It is a schematic diagram of the three-dimensional structure of the middle turntable in an embodiment of the present invention;

[0025] Fig.10 It is a schematic diagram of the exploded structure of the middle turntable in an embodiment of the present invention;

[0026] Fig.11 is a schematic diagram of the three-dimensional structure of a carrying mechanism according to an embodiment of the present invention;

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

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

[0029] Description of Figure Numbers:

[0030] 100 conveying track, 110 conveying track, 120 width adjustment mechanism, 121 adjustment handle, 122 adjustment screw rod, 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 flipping mechanism, 210 flipping drive mechanism, 211 self-adjusting slide rail, 220 flipping clamping mechanism, 221 flipping bracket, 222 flipping clamping cylinder, 223 flipping 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, 410 Y-axis drive mechanism, 420 X-axis drive mechanism, 430 Z-axis drive mechanism, 440 turntable clamp, 450 clamp, 500 tray loading mechanism, 600 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 member, 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 The embodiment of the present invention provides a tray turning mechanism, including a conveying track 100, a flipping mechanism 200, a lifting mechanism 300 and a carrying mechanism 400. The conveying track 100 is used to transport a tray carrying a product. The flipping mechanism 200 is arranged directly above the conveying track 100, and is used to flip the covered tray and the middle turntable 900 by 180 degrees, so that the product in the tray falls into the middle turntable 900. The reversing mechanism includes a flipping clamping mechanism 220 and a flipping driving mechanism 210. The flipping clamping mechanism 220 is used to clamp two clamping plates 230, and the flipping driving mechanism 210 is used to drive the flipping clamping mechanism 220 to perform a flipping movement. The lifting mechanism 300 is arranged below the conveying track 100, and is used to carry the clamping plate 230 located below, and lift the clamping plate 230 located below and the tray on the flipping mechanism 200 to a height flush with the flipping clamping mechanism 220. The transport mechanism 400 is disposed above the conveying track 100, and is used to place the upper clamping plate 230 and the middle turntable 900 onto 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 the embodiment of the present invention, the conveying track 100 transports the material tray to the bottom of the flipping mechanism 200, and then the lifting mechanism 300 lifts the clamping plate 230 located below, and makes the clamping plate 230 contact the material tray on the conveying track 100, and lifts the material tray to a certain height, so that the clamping plate 230 below and the material tray are flush with the height of the flipping clamping mechanism 220. Then the carrying mechanism 400 covers the clamping plate 230 and the middle turntable 900 on the material tray, and the flipping clamping mechanism 220 clamps the two clamping plates 230, so that the covered material tray and the middle turntable 900 are clamped between the two clamping plates 230. Then the lifting mechanism 300 descends, and the flipping clamping mechanism 220 flips 180 degrees under the drive of the flipping drive mechanism 210, so that the product on the material tray is turned over and falls into the middle 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, and then the lifting mechanism 300 descends to put the turntable 900 back on the conveying track 100, so that the product after the overturn can be sent to the unloading mechanism or the next device along with the turntable 900. The overturning mechanism can automatically complete the overturning of the product, improve the overturning efficiency, and no human intervention is required during the overturning process. The tray and the turntable 900 can be automatically sent to the flipping mechanism 200, which can avoid human intervention and cause static electricity on the product, which affects the subsequent production process. It can be understood that the overturning mechanism of the embodiment of the present invention can also be used to overturn 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 conveying track 100 is adjustable. The conveying track 100 includes two parallel conveying tracks 110, wherein one conveying track 110 is fixedly disposed on the frame, and the other conveying track 110 is slidably disposed on the frame via a width adjustment mechanism 120, and the width adjustment mechanism 120 can adjust the distance between the movable conveying track 110 and the fixed conveying track 110. The width adjustment mechanism 120 includes two adjusting screw rods 122 and at least two guide rails, and the directions of the adjusting screw rods 122 and the guide rails are parallel to the width direction of the conveying track 100, and the movable conveying 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, and an adjusting handle 121 is disposed at the outer end of the adjusting screw rod 122, and the width of the conveying track 100 can be adjusted by rotating the adjusting handle 121. It can be understood that the conveying track 100 can transport the trays via a conveyor belt or a conveyor chain, refer to 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 circulate and rotate 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 arranged between the flipping mechanism 200 and the lifting mechanism 300 and the conveying track 100, and the connecting rod mechanism 130 can slide the conveying track 100. The movement of the turning mechanism 100 in width is transmitted to the flipping mechanism 200 and the lifting mechanism 300, so that the turning 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 turning mechanism 200 and the lifting mechanism 300 remains unchanged, thereby avoiding the misalignment in the width direction between the lifting mechanism 300 and the turning mechanism 200, resulting in the turning 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 changeover efficiency of the turning mechanism and further improve the 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 connecting rod 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 connecting rods 132 are equal in length and remain parallel, the two active connecting rods 132 form two parallel sides of a parallelogram structure, and the rotating shaft of the driven connecting rod 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 change in the width 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 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 conveying track 110, and the active connecting rod 132 is rotatably connected to the conveying track 110 through the connecting rod 133, and one end of the active connecting rod 132 facing away from the driven connecting rod 131 is rotatably connected to one end of the connecting rod 133 facing away from the conveying track 110. It can be understood that by reasonably 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 force arms of the driven connecting rod 131, it is possible to achieve that the flipping mechanism 200 and the lifting mechanism 300 are maintained at the center left or center right position of the conveying track 100 to adapt to some special tray structures.

[0036] Reference Figure 4In this embodiment, static eliminators 150 are provided at the entrance and exit of the conveying track 100. The static eliminators 150 are used to remove static electricity from the products on the material trays and the intermediate turntable 900 flowing in and out, so as to prevent the static electricity carried by the products from affecting the subsequent mounting process. In this embodiment, the static eliminator 150 uses a static eliminator bar, one end of which is fixedly set on one conveying track 110, and the other end passes through a bracket on another conveying track 110 with a circular hole matching the diameter of the static eliminator bar, so as to prevent the static eliminator bar from affecting the width adjustment of the conveying track 100.

[0037] Reference Figure 2 and Figure 4 In some embodiments, in order to ensure that the material tray and the middle turntable 900 can be maintained in the middle of the two clamping plates 230 when the turning plate clamping mechanism clamps the material tray and the middle turntable 900, a positioning mechanism 140 is further provided above the conveying track 100. The positioning mechanism 140 is used to regularize the material tray on the lifting mechanism 300 to the middle of the clamping plate 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 arranged on both sides of the width direction of the turning mechanism 200. 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 conveying 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 arranged on the lifting bracket 310. The lifting drive mechanism 320 is arranged on the lifting bracket 310. The lifting platform 330 can be lifted and lowered under the drive of the lifting drive mechanism 320. The two ends of the lifting bracket 310 are slidably connected with the two conveying rails 110 through two self-adjusting slide rails 211, and are connected to the conveying rails 110 on the corresponding side through the connecting rod mechanism 130. It can be understood that the lifting platform 330 can be slidably connected with the lifting bracket 310 through a slide rail or a slide rod, and the lifting drive mechanism 320 can be composed of a screw pair and a motor, or driven by a cylinder.

[0039] Reference Figure 3In order to facilitate the fixing of the clamping plate 230 on the lifting mechanism 300 or the carrying mechanism 400, a plurality of first magnets 231 are inlaid on the outer surface of the clamping plate 230, and a plurality of second magnets 332 are inlaid on the contact surface of the lifting mechanism 300 and the carrying mechanism 400 where the clamping plate 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 inlaid on the upper surface of the lifting platform 330. When the lifting platform 330 contacts the clamping plate 230 below, the lifting platform 330 can fix the clamping plate 230 on the lifting platform 330 through the magnetic force between the second magnet 332 and the first magnet 231, so as to prevent the clamping plate 230 from shaking when the lifting platform 330 is raised or lowered, thereby preventing the flap clamping mechanism from being able to clamp both ends of the clamping plate 230 well.

[0040] Reference Fig. 9 and Fig.10 In this embodiment, in order to improve the success rate of product turning over and prevent the product from falling accurately into the corresponding receiving groove on the middle turntable 900 during the process of falling from the material tray, the middle 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 posts 923 are vertically arranged 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 posts 923 are slidably connected, and an elastic member 922 is arranged 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 subjected to pressure, there is a certain gap between the positioning plate 910 and the bottom plate 920, so that the end surface of the cushion block 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 cushion block 921 is higher than the surface of the positioning plate 910.

[0041] Reference Fig.13When turning over, one side of the positioning plate 910 of the transfer plate contacts the material tray, the transfer tray 900 covers the material tray, and the receiving grooves on the transfer tray 900 correspond to and snap into the receiving grooves on the material tray to form independent cavities. When the flip 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 the pad 921 will extend into the receiving groove on the material tray, compressing the activity space of the product, thereby reducing the falling distance of the product after turning over, and reducing the probability of horizontal displacement of the product during the falling process, thereby ensuring that the product can stably fall into the receiving groove of the transfer tray 900, and 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 middle turntable 900, and the product falling on the pad 921 falls stably into the receiving groove of the middle turntable 900 with the pad 921 under the support of the pad 921. It can be understood that matching positioning pins and positioning holes are preferably provided on the contact surface of the material tray and the middle turntable 900 to ensure that the material tray and the middle turntable 900 can be aligned when covered, and to ensure the alignment of the receiving groove.

[0042] Reference Figure 3 , Figure 7 and Fig.10 In some embodiments, in order to further improve the success rate of turning over, a vacuum manifold 930 is provided on the back of the bottom plate 920, a vacuum cavity 931 is formed between the vacuum manifold 930 and the bottom plate 920, an air passage connected to the vacuum cavity 931 is provided on the cushion block 921, and a vacuum interface 932 connected to the vacuum cavity 931 is provided on the vacuum manifold 930. A vacuum joint 331 matching the vacuum interface 932 is provided on the lifting platform 330 of the lifting mechanism 300, and an avoidance hole 233 for the vacuum joint 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, and at the same time, the vacuum joint 331 passes through the avoidance hole 233 and communicates with the vacuum chamber 931, so that the air in the vacuum chamber 931 can be sucked out, so that the product is adsorbed on the cushion block 921, thereby further increasing the probability of the product falling into the bottom center of the receiving groove in the middle turntable 900, and further improving the success rate of the turnaround. Figure 7 and Figure 8 In some embodiments, a shaking cylinder 333 is further provided on the lifting platform 330. The shaking cylinder 333 can slightly lift the clamping plate 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 driving mechanisms 210 and a pair of flip clamping mechanisms 220. The two flip driving mechanisms 210 and the two flip clamping mechanisms 220 are respectively arranged on both sides of the jacking mechanism 300 in the transportation direction of the conveying track 100. The flip clamping mechanism 220 can clamp the two ends of the clamping plate 230 by means of a clamping claw, thereby clamping the material tray and the middle turntable 900 between the clamping plates 230. The flip driving mechanism 210 includes a flip driving motor and a flip reducer, and 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 seat of the flip driving motor and the flip reducer, and the output shaft of the flip driving motor is connected to the rotating shaft of the flip bracket 221 through the flip reducer. The mounting seat of the flip driving motor and the flip reducer is slidably arranged above the conveying track 100 through the self-adjusting slide rail 211, and is transmission-connected to the conveying track 110 through the 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 driving mechanism 210. The flip clamping cylinders 222 are provided with flip clamping fingers 223. The flip clamping cylinders 222 drive the flip clamping fingers 223 to perform a clamping action so as to clamp 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 folding action. After the clamping plate 230 is released, the flip clamping fingers 223 are vertically arranged on both sides of the clamping plate 230 in the conveying direction of the conveying track 100 to prevent 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 transfer tray 900 by clamping, magnetic attraction or vacuum adsorption. Figure 1 , Fig.11 and Fig.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 clamping plate 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 clamping plate clamp 450 are arranged on the Z-axis drive mechanism 430. The middle turntable clamp 440 and the clamping plate 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 the empty material tray and the middle turntable 900. Refer to 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 middle 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 the clamping of the clamping plate 230 on the middle 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 properly 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 judge whether the products are turned over and fall well into the receiving slot of the turntable 900 through a visual algorithm. 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 and cover the turntable 900 on the material tray. It is understandable that the photographing mechanism is preferably provided on the Z-axis driving mechanism 430 of the carrying mechanism 400, so that it can move with the clamping jaws 450 and the turntable jaws 440 to take pictures of material trays or turntables 900 of different sizes. Refer to Figure 4 In this embodiment, strip-shaped light sources 160 are provided on both 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 conveying track 100. The tray loading mechanism 500 can separate the stacked trays and send them into the conveying track 100 through a conveying mechanism such as a conveyor belt. The turntable receiving mechanism 800 can receive the turntables 900 flowing out of the conveying track 100 and stack the turntables 900 into a turntable 900 pile. The tray unloading mechanism 600 and the turntable loading mechanism 700 are respectively used to stack the empty trays after the turntable is turned over and the inverted turntable 900 before the turntable is turned over. The tray unloading mechanism 600 and the turntable loading mechanism 700 are preferably used as a liftable stacking platform. It is understood that the specific structures of the tray loading mechanism 500, the tray unloading mechanism 600, the middle turntable loading mechanism 700 and the middle turntable receiving mechanism 800 are common knowledge in the art and are not described in detail here. It is understood that in some embodiments, the tray turning machine can eliminate the tray loading mechanism 500 and the middle turntable receiving mechanism 800, and the conveying track 100 can be directly connected to the production line to complete the online turning of the product.

[0047] It should be noted that in the description of the present invention, if there are any orientation descriptions, such as up, down, front, back, left, right, etc., the orientations or positional relationships indicated are all based on the orientations or positional relationships shown in the 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 orientation, be constructed or operated in a specific orientation, 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", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0049] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. 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-mentioned 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 substitutions made by technicians in this field on the basis of the present invention shall 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 flipping 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 products in the material tray fall into the middle turntable (900). The flipping mechanism (200) comprises a flipping clamping mechanism (220) and a flipping driving mechanism (210). The flipping clamping mechanism (220) is used to clamp two clamping plates (230), and the flipping driving mechanism (210) is used to drive the flipping clamping mechanism (220) to perform a flipping movement. A lifting mechanism (300) is disposed below the conveying track (100) and is used to carry the clamping plate (230) located below and 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); The carrying mechanism (400) is arranged above the conveying track (100) and is used to place the clamping plate (230) and the middle turntable (900) located above onto the material tray on the lifting mechanism (300) before flipping, or to remove the clamping plate (230) and the empty material tray after flipping.

2. The turning mechanism according to claim 1, characterized in that: 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). A connecting rod mechanism (130) is arranged between the flipping mechanism (200) and the lifting mechanism (300) and the conveying track (100). 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.

3. The turning mechanism according to claim 2, characterized in that: The connecting rod mechanism (130) comprises two active connecting rods (132) and a driven connecting rod (131); the driven connecting rod (131) is rotatably arranged on the flipping 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); and 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.

4. The turning mechanism according to claim 1, characterized in that: The middle turntable (900) comprises 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, wherein a plurality of guide columns (923) are vertically arranged on the bottom plate (920), wherein the bottom plate (920) is further provided with cushion blocks (921) whose number is equal to the number of the receiving through holes (911), wherein the positioning plate (910) is slidably connected to the guide columns (923), wherein an elastic member (922) is provided between the positioning plate (910) and the bottom plate (920), wherein the cushion blocks (921) are arranged one by one in the accommodating through hole (911); 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 cushion block (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 cushion block (921) is higher than the surface of the positioning plate (910).

5. The turning mechanism according to claim 4, characterized in that: The center turntable (900) further comprises a vacuum diverter plate (930), wherein the vacuum diverter plate (930) is arranged on the side of the bottom plate (920) facing away from the positioning plate (910), a vacuum cavity (931) is formed between the vacuum diverter plate (930) and the bottom plate (920), an air passage connected to the vacuum cavity (931) is arranged on the cushion block (921), a vacuum interface (932) connected to the vacuum cavity (931) is arranged on the vacuum diverter plate (930), a vacuum joint (331) matching the vacuum interface (932) is arranged on the lifting mechanism (300), and an avoidance hole (233) for avoiding the vacuum joint (331) is arranged on the clamping plate (230).

6. The turning 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) that are in contact with the clamping plate (230), wherein the magnetic properties of the first magnets (231) and the second magnets (332) are opposite.

7. The turning 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.

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

9. 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 middle turntable (900).

10. A tray turning machine, characterized in that: It comprises a turntable tipping mechanism according to any one of claims 1 to 9, 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 turntable tipping mechanism, and the material tray unloading mechanism (600) and the middle turntable loading mechanism (700) are arranged on one side of the turntable tipping mechanism.

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