Polyurethane mold conveying line and full-automatic production line

Abstract

The application discloses a polyurethane mold conveying line and a full-automatic production line, and relates to the technical field of polyurethane cushion block production. The polyurethane mold conveying line comprises a mold trolley and a plurality of line bodies. The mold trolley is used for carrying a mold; the plurality of line bodies are sequentially arranged; the plurality of line bodies are independently driven respectively, and the plurality of line bodies can synchronously drive the mold trolley to move. The whole line is driven by a plurality of power segments, so that the power for driving the whole line is no longer subject to the length and load of the line body, large-load long-distance line bodies are realized, the whole line is divided into segments, the single power load is reduced, the inertia of the line body is reduced, the jerk is reduced, and the production efficiency and quality are improved.

Description

Technical Field

[0001] This invention relates to the field of polyurethane buffer block production technology, and in particular to a polyurethane mold conveying line and a fully automated production line. Background Technology

[0002] A significant problem currently faced in the production of polyurethane buffer blocks is the poor operation of the fully automated production line. Specifically, the line exhibits a continuous creeping motion, with all mold carriages driven as a single unit. However, the excessive weight of the mold carriages and molds themselves causes noticeable jerking during operation. This situation severely impacts production efficiency and product quality. Summary of the Invention

[0003] The purpose of this invention is to provide a polyurethane mold conveying line and a fully automated production line to solve the problems existing in the prior art and improve production efficiency and product quality.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] This invention provides a polyurethane mold conveying line, comprising: a mold trolley and multiple line segments. The mold trolley is used to carry the mold; the multiple line segments are arranged sequentially; each of the multiple line segments is driven independently, and the multiple line segments can synchronously drive the mold trolley to move.

[0006] Preferably, the line is a servo chain conveyor line, and the bottom of the mold trolley is provided with two meshing teeth, which are arranged sequentially along the longitudinal direction of the mold trolley. The meshing teeth can mesh with the servo chain conveyor line.

[0007] Preferably, it also includes a trolley transfer mechanism. The multiple sections of the line are divided into upper and lower layers. The trolley transfer mechanism can transport the mold trolley that has traveled to one end of the upper line to one end of the lower line and transport the mold trolley that has traveled to the other end of the lower line to the other end of the upper line.

[0008] Preferably, the mold trolley is equipped with a clutch, which can control the raising and lowering of the meshing teeth.

[0009] Preferably, it further includes a guide rail fixedly disposed relative to the production line, the mold trolley being slidably disposed on the guide rail, the trolley transfer mechanism including a horizontal push-pull device and a lifting device, two trolley transfer mechanisms being provided, the two trolley transfer mechanisms being respectively disposed at the end and beginning of the upper and lower layers of the production line, the free end of the lifting device being fixedly disposed with a short guide rail and the horizontal push-pull device, the lifting device being able to drive the short guide rail to rise to connect with the upper layer of the guide rail and to descend to connect with the lower layer of the guide rail, the horizontal push-pull device being used to push and pull the mold trolley from the production line to the short guide rail and from the short guide rail to the production line.

[0010] Preferably, each of the servo chain conveyor lines includes a drive chain and a servo motor, all of which operate synchronously, and the interval between adjacent drive chains is exactly an integer multiple of the pitch of the drive chain.

[0011] The present invention also provides a fully automated production line for polyurethane buffer blocks, including a mold, multiple working mechanisms, and a polyurethane mold conveying line as described above; the mold is mounted on the mold trolley, and the polyurethane mold conveying line can transport the mold trolley to the workstations of each of the working mechanisms.

[0012] Preferably, the working mechanism includes a first capping mechanism, a cap opening mechanism, a mold opening mechanism, a material handling robot, a weighing and sorting line, a cleaning robot, a spraying robot, a mold closing mechanism, a pouring mechanism, a cap closing mechanism, and a second capping mechanism.

[0013] Preferably, the mold trolley includes a base, a fixed mold mounting plate, a moving mold mounting plate, a flip cover, a first transmission mechanism, and a second transmission mechanism. The fixed mold mounting plate is vertically fixed on the base. The moving mold mounting plate can rotate in directions approaching and away from the fixed mold mounting plate. The fixed mold is fixedly mounted on the fixed mold, and the moving mold is fixedly mounted on the moving mold. When the moving mold mounting plate rotates towards the fixed mold mounting plate, it can cause the moving mold to engage with the fixed mold. When the moving mold mounting plate rotates away from the fixed mold mounting plate, it can cause the moving mold to move away from the fixed mold. A vertical support plate is fixedly mounted on the base. The cover is rotatably mounted on the support plate around a horizontal axis. The inner side of the flip cover is used to mount the mold cover. The opening mechanism and the closing mechanism are used to drive the flip cover to flip outward and inward, respectively. Flipping the flip cover outward can move the mold cover away from the mold opening, and flipping it inward can rotate the mold cover to be directly above the mold opening. The first transmission mechanism is configured to transmit the power of the mold opening mechanism and the mold closing mechanism to the moving mold mounting plate so that the moving mold mounting plate can rotate in the direction of approaching and moving away from the fixed mold mounting plate. The second transmission mechanism is configured to transmit the power of the first capping mechanism and the second capping mechanism to the mold cover and move the mold cover closer to and away from the mold opening.

[0014] Preferably, the first transmission mechanism includes a guide rod, a first screw, a slider, and a connecting rod. The first screw is perpendicular to the support plate. The moving mold mounting plate is disposed on the first side of the support plate. One end of the first screw is rotatably disposed on the second side of the support plate around its own axis. The slider is threadedly connected to the first screw. The guide rod is parallel to the first screw and one end is fixed on the second side of the support plate. The slider is slidably connected to the guide rod. One end of the connecting rod is hinged to the slider, and the other end is hinged to the moving mold mounting plate. The mold opening mechanism and the mold closing mechanism both include a telescopic cylinder, a first servo motor, and a first rotating head. The first servo motor is disposed on the drive end of the telescopic cylinder, and the first rotating head is disposed on the drive end of the first servo motor. The telescopic cylinder drives the first servo motor and the first rotating head to approach the first screw at the corresponding workstation until the first rotating head and the first screw are connected in transmission. The first servo motor drives the first screw to rotate, thereby driving the slider, the connecting rod, the moving mold mounting plate, and the moving mold to rotate relative to the fixed mold, thereby realizing mold closing and mold opening.

[0015] The second transmission mechanism includes a second nut and a second screw. The second nut is rotatably connected to the flip cover about its own axis. The second screw is threaded into the second nut. The bottom of the second screw is located inside the flip cover and connected to the mold cover fixing seat. The first capping mechanism and the second capping mechanism control the second screw to drive the mold cover to move up and down by rotating the second nut.

[0016] The first end of the flip cover is hinged to the base or the fixed mold mounting plate, and the second end is provided with a lever lock. The outer side of the moving mold mounting plate is provided with a locking hook that matches the lever lock. When the flip cover is in the inward flip state, the lever lock automatically hooks onto the locking hook under its own weight. The top of the lever lock is provided with a flip cover grab hook. Both the opening mechanism and the closing mechanism include a grab head and a grab head driving device. The grab head driving device drives the grab head to grab the flip cover grab hook and drive the lever lock to unlock and the flip cover to flip.

[0017] Both the first capping mechanism and the second capping mechanism include a lifting cylinder, a second servo motor, and a second rotating head; the lifting cylinder is mounted on a gantry frame above the production line, the second servo motor is mounted on the drive end of the lifting cylinder, and the second rotating head is mounted on the drive end of the second servo motor; the second rotating head and the second nut cooperate to transmit torque.

[0018] The actuator of the material handling robot is a gripper. In the mold-open state, the material handling robot controls the gripper to pick up the polyurethane buffer block inside the mold and place it on the weighing and sorting line.

[0019] The weighing and sorting line includes a discharge platform, a loading cylinder, a weighing belt conveyor, and a sorting chain conveyor. The discharge platform is used to receive the polyurethane buffer blocks held by the picking robot. The weighing belt conveyor and the loading cylinder are respectively arranged on opposite sides of the discharge platform. The loading cylinder is used to push the polyurethane buffer blocks on the discharge platform onto the weighing belt conveyor. The weighing belt conveyor is used to weigh and transfer the weighed polyurethane buffer blocks to the sorting chain conveyor. The sorting chain conveyor completes the sorting according to the weight information of each polyurethane buffer block.

[0020] The cleaning robot's actuator is a roller brush, which drives the roller brush to clean the mold cavity surface along a preset trajectory.

[0021] The actuator of the spraying robot is a spray nozzle. The spraying robot drives the spray nozzle to spray the release agent onto the surface of the mold cavity along a preset trajectory.

[0022] The present invention achieves the following technical effects compared to the prior art:

[0023] 1. The present invention uses multi-power segmented drive for the entire line, so that the power of the entire line is no longer limited by the line length and line load. It realizes the large load and long distance line, breaking it down into parts, thereby reducing the load of a single power and reducing the inertia of the line, and reducing jerking, thus improving production efficiency and quality.

[0024] 2. The production line consists of two layers, with the lower layer being a recirculation layer. The two ends are connected by a lifting and lowering method, which achieves stable recirculation of the production line without jamming or stuttering.

[0025] 3. The servo motor drives the chain, which drives the mold carriage to work according to the set rhythm, achieving fast and stable movement and stopping of the mold carriage. This allows all operating equipment to work at a fixed point after the mold carriage stops, without having to consider the influence of the line movement.

[0026] 4. This invention employs an integrated flip-top closing mechanism, which fixes the relative positions of the mold cover and the mold cavity. After the cover is flipped and closed, the mold cover is directly opposite the mold opening. By rotating the second nut at the top, the second screw is lowered, causing the mold cover to press tightly against the mold cavity, achieving a 100% success rate in closing the cover. At the same time, it avoids the impact of tracking accuracy on the robot's grasping and placement accuracy, as well as possible abnormal collisions.

[0027] 5. The mold trolley of this invention employs a system where the moving and fixed molds are respectively fixed, with the fixed mold remaining stationary. The moving mold is connected by a connecting rod and a slider, and the slider is driven to move back and forth by the rotation of a first screw. This achieves the opening and closing of the moving mold through the rotation of the first screw, while simultaneously locking the mold by outputting a certain torque to tighten the slider. This makes the locking action controllable. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of a fully automated production line for polyurethane buffer blocks provided in an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the line body and guide rails;

[0031] Figure 3 This is a schematic diagram of the structure of the mold carriage when the fixed mold mounting plate and the moving mold mounting plate are in the closed state and the flip cover is in the snap-fit ​​state;

[0032] Figure 4 This is a structural diagram showing the flip cover in the open state and the fixed mold mounting plate and the moving mold mounting plate in the closed state.

[0033] Figure 5 for Figure 4 A view from another direction;

[0034] Figure 6 This is a schematic diagram of the flip cover in the latched state;

[0035] Figure 7 for Figure 1 Enlarged view of the structure at point A in the middle;

[0036] Figure 8 for Figure 1 Enlarged view of the structure at point B;

[0037] Figure 9 This is a schematic diagram of the mold opening mechanism and the mold closing mechanism;

[0038] Figure 10 A schematic diagram of the opening and closing mechanisms;

[0039] Figure 11 for Figure 10 Enlarged view of the structure at point A in the middle;

[0040] Figure 12 This is a schematic diagram of the material handling robot.

[0041] Figure 13 This is a schematic diagram of the cleaning mechanism;

[0042] Figure 14 This is a schematic diagram of the fuel injection mechanism;

[0043] Figure 15 This is a schematic diagram of the weighing and sorting line.

[0044] In the diagram: 1-Mold trolley; 2-Line; 3-Trolley transfer mechanism; 4-Guide rail; 5-Meshing gear; 6-Clutch; 7-First capping mechanism; 8-Material handling robot; 9-Mold opening mechanism; 10-Weighing and sorting line; 11-Cleaning robot; 12-Spraying robot; 13-Mold closing mechanism; 14-Second capping mechanism; 15-Cap opening mechanism; 20-Moving mold mounting plate; 21-Support plate; 22-Flip cover; 23-Base; 24-Fixed mold mounting plate; 25-Mold cover; 26-Second nut; 27-Second screw; 28-Lever lock; 29-Locking hook; 30-Flip 31-Hook cover; 32-Guide rod; 33-First screw; 34-Slider; 35-Connecting rod; 36-Guide wheel; 37-Lifting cylinder; 38-Second servo motor; 39-Second rotating head; 40-Gantry frame; 41-First servo motor; 42-First rotating head; 43-Lifting cylinder; 44-Grip head telescopic cylinder; 45-Grip head; 46-Hand; 47-Roller brush; 48-Oil injector; 49-Sorting chain plate line; 50-Weighing belt line; 51-Discharge platform; 52-Feeding cylinder; 53-Discharge port; 54-Defective product box; 55-Material box. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] To facilitate understanding, some examples known to the inventor are explained.

[0048] Existing production lines are all slow-moving, creeping lines where all mold carriages are driven as a single unit. The combined weight of the mold carriages and molds is too great, causing significant jerking during line operation. This leads to discontinuous production, increasing production time and costs. On one hand, this jerking can negatively impact the polyurethane buffer blocks being processed, causing surface defects and dimensional deviations, thus reducing the product yield. This is detrimental to high-efficiency, high-quality production. On the other hand, existing fully automated polyurethane buffer block production lines were not adequately designed to account for the total weight of the mold carriages and molds, making it difficult for the drive system, transmission components, tracks, and control system to adapt to heavy-load operation in actual production. Therefore, an improved technical solution is urgently needed to address this problem and improve the production efficiency and quality of polyurethane buffer blocks.

[0049] The following is combined Figures 1 to 15 The following describes embodiments of the present invention.

[0050] This invention provides a polyurethane mold conveyor line, such as... Figures 1-2 As shown, it includes: a mold carriage 1 and a multi-segment production line 2. The mold carriage 1 is used to carry the mold; the multi-segment production line 2 is arranged sequentially; the multi-segment production line 2 is driven independently, and the multi-segment production line 2 can synchronously drive the mold carriage 1 to move.

[0051] In this embodiment of the invention, the entire production line is driven by multiple power segments, so that the power driving the entire line is no longer limited by the line length and line load. This enables the large load and long distance of the line to be broken down into smaller segments, thereby reducing the load of a single power segment, reducing the inertia of the line, reducing jerking, and thus improving production efficiency and quality.

[0052] In some embodiments, the line 2 is a servo chain conveyor line, and the bottom of the mold carriage 1 is provided with two meshing teeth 5. The two meshing teeth 5 are arranged sequentially along the longitudinal direction of the mold carriage 1. The meshing teeth 5 can mesh with the servo chain conveyor line. After the meshing teeth 5 mesh with the servo chain conveyor line, the servo chain conveyor line can drive the meshing teeth 5 and the mold carriage 1 to move.

[0053] In use, the two meshing teeth 5 can be driven by the same section of the line 2, or they can be driven and stopped synchronously by two adjacent sections of the line 2.

[0054] This embodiment uses a servo chain conveyor line to achieve precise control of the start and stop of the mold carriage 1, thereby enabling the mold carriage 1 to stop precisely at the corresponding workstation.

[0055] In related technologies, production line 2 is typically arranged on the same horizontal plane. This leads to errors in the moving speed of the mold carriage 1 at chain bends due to the influence of the turning radius, thus affecting the accuracy and smoothness of production line 2. To address these issues...

[0056] In some embodiments, the present invention also includes a trolley transfer mechanism 3. The multi-segment line 2 is divided into upper and lower layers. The trolley transfer mechanism 3 can transport the mold trolley 1 that has traveled to one end of the upper line 2 to one end of the lower line 2 and transport the mold trolley 1 that has traveled to the other end of the lower line 2 to the other end of the upper line 2.

[0057] In this embodiment, the line 2 is divided into upper and lower layers. The lower layer is used for recirculation, and the two ends are connected by lifting and lowering, which achieves stable recirculation of the line 2 without jamming or stuttering.

[0058] In some embodiments, a clutch 6 is provided on the mold carriage 1. The clutch 6 can control the rising and falling of the meshing teeth 5. The clutch 6 is located at the bottom of the mold carriage 1, and the meshing teeth 5 are located at the bottom of the clutch 6. The clutch drives the rising and falling of the meshing teeth 5 through linear drive components such as electric cylinders, pneumatic cylinders or hydraulic cylinders.

[0059] In this embodiment, the engagement and disengagement of the meshing tooth 5 and the servo chain conveyor line are realized. Specifically, when the clutch 6 controls the meshing tooth 5 to descend to the height set by the control system, the meshing tooth 5 engages with the servo chain conveyor line and realizes transmission. When the clutch 6 controls the meshing tooth 5 to rise to the height set by the control system, the meshing tooth 5 disengages from the servo chain conveyor line. The specific control logic is input into the control system in advance.

[0060] In some embodiments, the present invention further includes a guide rail 4 fixedly disposed relative to the production line 2, a mold trolley 1 slidably disposed on the guide rail 4, and a trolley transfer mechanism 3 including a horizontal push-pull device and a lifting device. Two trolley transfer mechanisms 3 are provided, and the two trolley transfer mechanisms 3 are respectively disposed at the end and the beginning of the upper and lower layers of the production line 2. The free end of the lifting device is fixedly provided with a short guide rail and a horizontal push-pull device. The lifting device can drive the short guide rail to rise to connect with the upper layer guide rail 4 and to fall to connect with the lower layer guide rail 4. The horizontal push-pull device is used to push and pull the mold trolley 1 from the production line 2 to the short guide rail and from the short guide rail to the production line 2.

[0061] This embodiment realizes the up-and-down transfer of the mold trolley 1. In the working state, all the lines 2 are controlled to move at the same rhythm and speed to ensure that the mold trolley 1 can smoothly complete the alternation when passing the junction of two adjacent lines 2.

[0062] When it is necessary to transfer the mold trolley 1 on the upper line 2 to the lower line, when the mold trolley 1 moves to the end of the upper line 2, the clutch 6 controls the meshing teeth 5 to rise to disengage the meshing relationship. Then, the horizontal push-pull device hooks the corresponding part of the mold trolley 1 and pulls the mold trolley 1 onto the short guide rail until it moves to the set position. The lifting device drives the short guide rail and the mold trolley 1 on it to descend until the short guide rail connects with the lower guide rail 4. Then, the horizontal push-pull device pushes the mold trolley 1 onto the lower guide rail 4, thus completing the transfer from top to bottom.

[0063] Since line 2 drives the mold trolley 1 to move according to the set rhythm, when the time interval between two adjacent rhythms is short, the trolley transfer mechanism can transfer multiple mold trolleys 1 at once, such as two or three. Taking the transfer of two at once as an example, when the first mold trolley moves to the end of the upper line 2, the clutch of the first mold trolley is controlled to raise the engagement gear 5 to stop it. After waiting for one rhythm, the second mold trolley moves close to the first mold trolley, and the clutch 6 on the second mold trolley is controlled to raise the engagement gear 5. Then, the horizontal push-pull device simultaneously pulls the two mold trolleys onto the lifting platform of the lifting device. After the lifting device drives the lifting platform to descend to the position, the horizontal push-pull device simultaneously pushes the two mold trolleys onto the lower guide rail 4. Then, the lifting device drives the lifting platform to rise. Under the control of the control system, the clutch 6 on the two mold trolleys on the lower guide rail 4 drives the engagement gear 5 to descend and complete the engagement for transmission at a specific time.

[0064] The above embodiments need to ensure that the horizontal distance between the short guide rail and the upper and lower guide rails 4 is short, for example, it can be between 5 and 20 mm. Of course, in some embodiments, an additional horizontal driving device can be set to drive the short guide rail to move away from and closer to the upper and lower guide rails 4 in the horizontal direction to achieve connection and separation.

[0065] To further ensure smooth alternating transmission, in some embodiments, each servo chain conveyor line includes a drive chain and a servo motor, all servo motors operate synchronously, and the interval between adjacent drive chains is exactly an integer multiple of the drive chain pitch.

[0066] In some embodiments, the bottom of the mold trolley 1 is provided with two sets of guide wheels 35, and two guide rails 4 are provided, with the two sets of guide wheels 35 respectively located on the sides of the two guide rails 4 that are far apart.

[0067] In some embodiments, the length of each line segment 2 is no more than 4m.

[0068] In some embodiments, the drive chain consists of three rows of roller chains, with the meshing teeth 5 engaging only with the middle chain.

[0069] This invention also provides a fully automated production line for polyurethane buffer blocks, such as... Figures 1 to 15 As shown, it includes a mold, multiple working mechanisms, and the polyurethane mold conveyor line as described above; the mold is set on the mold trolley 1, and the polyurethane mold conveyor line can transport the mold trolley 1 to the workstations of each working mechanism.

[0070] In this embodiment, after the mold trolley 1 is driven by the production line 2 to each station and stops, the equipment next to each station performs corresponding work on the mold on the mold trolley 1.

[0071] Furthermore, this embodiment possesses all the advantages of the embodiments described above, and will not be repeated here.

[0072] In some embodiments, the working mechanism includes a first capping mechanism 7, a cap opening mechanism 15, a mold opening mechanism 9, a material handling robot 8, a weighing and sorting line 10, a cleaning robot 11, a spraying robot 12, a mold closing mechanism 13, a pouring mechanism, a cap closing mechanism, and a second capping mechanism 14.

[0073] In this embodiment, the first capping mechanism 7, the cap opening mechanism 15, the mold opening mechanism 9, the material picking robot 8, the cleaning robot 11, the oil spraying robot 12, the mold closing mechanism 13, the pouring mechanism, the cap closing mechanism, and the second capping mechanism 14 are arranged sequentially along the movement trajectory of the mold trolley 1 in the working section, and the weighing and sorting line 10 is arranged on one side of the material picking robot 8.

[0074] To facilitate understanding of the following embodiments, the composition of the mold is first described. The mold includes a moving mold, a fixed mold, and a mold cover 25. The bottom of the moving mold and the bottom of the fixed mold are hinged. Rotating the moving mold away from the fixed mold opens the mold, and rotating the moving mold towards the fixed mold closes the mold. The mold needs to be opened before the polyurethane buffer block is removed. Before pouring polyurethane fluid into the mold, the mold needs to be closed, leaving only the top mold opening. Then, the material is poured into the mold through the mold opening. After the mold cover 25 is placed on the mold opening, the mold is completely closed to form the polyurethane buffer block.

[0075] In some embodiments, the mold trolley 1 includes a base 23, a fixed mold mounting plate 24, a moving mold mounting plate 20, a flip cover 22, a first transmission mechanism, and a second transmission mechanism. The fixed mold mounting plate 24 is vertically fixed on the base 23. The moving mold mounting plate 20 can rotate in directions approaching and away from the fixed mold mounting plate 24. The fixed mold is fixedly mounted on the fixed mold mounting plate 24, and the moving mold is fixedly mounted on the moving mold mounting plate 20. When the moving mold mounting plate 20 rotates towards the fixed mold mounting plate 24, it can drive the moving mold to engage with the fixed mold. When the moving mold mounting plate 20 rotates away from the fixed mold mounting plate 24, it can drive the moving mold away from the fixed mold. A vertical support plate is fixedly mounted on the base 23. 21. A flip cover 22 is rotatably mounted on a support plate 21 about a horizontal axis. The inner side of the flip cover 22 is used to mount a mold cover 25. The opening mechanism 15 and the closing mechanism are used to drive the flip cover 22 to flip outward and inward, respectively. Flipping the flip cover 22 outward can drive the mold cover 25 away from the mold opening, and flipping it inward can drive the mold cover 25 to rotate directly above the mold opening. The first transmission mechanism is configured to transmit the power of the mold opening mechanism 9 and the mold closing mechanism 13 to the moving mold mounting plate 20 so that the moving mold mounting plate 20 can rotate in the direction of approaching and moving away from the fixed mold mounting plate 24. The second transmission mechanism is configured to transmit the power of the first capping mechanism 7 and the second capping mechanism 14 to the mold cover 25 and make the mold cover 25 approach and move away from the mold opening.

[0076] The embodiment of the present invention adopts an integrated flip-top closing mechanism (the flip-top 22 is rotatably mounted on the support plate 21 around a horizontal axis), which fixes the relative position of the mold cover 25 and the mold cavity, avoiding the influence of the tracking accuracy on the robot's grasping and placement accuracy and possible abnormal collisions.

[0077] In some embodiments, the first transmission mechanism includes a guide rod 31, a first screw 32, a slider 33, and a connecting rod 34. The first screw 32 is perpendicular to the support plate 21. The moving mold mounting plate 20 is disposed on the first side of the support plate 21. One end of the first screw 32 is rotatably disposed on the second side of the support plate 21 about its own axis. The slider 33 is threadedly connected to the first screw 32. The guide rod 31 is parallel to the first screw 32 and one end is fixed to the second side of the support plate 21. The slider 33 is slidably connected to the guide rod 31. One end of the connecting rod 34 is hinged to the slider 33, and the other end is hinged to the moving mold mounting plate 20. The mold opening mechanism 9 is... Both the telescopic cylinder 40, the first servo motor 41, and the first rotating head 42 are included in the mold closing mechanism 13. The first servo motor 41 is located at the drive end of the telescopic cylinder 40, and the first rotating head 42 is located at the drive end of the first servo motor 41. The telescopic cylinder 40 drives the first servo motor 41 and the first rotating head 42 to approach the first screw 32 at the corresponding work station until the first rotating head 42 and the first screw 32 are connected in transmission. The first servo motor 41 drives the first screw 32 to rotate, thereby driving the slider 33, the connecting rod 34, the moving mold mounting plate 20, and the moving mold to rotate relative to the fixed mold, thereby realizing mold closing and mold opening.

[0078] The second transmission mechanism includes a second nut 26 and a second screw 27. The second nut 26 is rotatably connected to the flip cover 22 around its own axis. The second screw 27 is threaded into the second nut 26. The bottom of the second screw 27 is located inside the flip cover 22 and is connected to the mold cover 25 fixing seat. The first capping mechanism 7 and the second capping mechanism 14 control the second screw 27 to drive the mold cover 25 to move up and down by rotating the second nut 26.

[0079] The first end of the flip cover 22 is hinged to the base 23 or the fixed mold mounting plate 24, and the second end is provided with a lever lock 28. The outer side of the moving mold mounting plate 20 is provided with a locking hook 29 that matches the lever lock 28. When the flip cover 22 is flipped inward, the lever lock 28 is automatically hooked onto the locking hook 29 under its own weight. A flip cover grab hook 30 is provided on the top of the lever lock 28. Both the opening mechanism 15 and the closing mechanism include a grab head 45 and a grab head 45 driving device. The grab head 45 driving device drives the grab head 45 to grab the flip cover grab hook 30 and drive the lever lock 28 to unlock and the flip cover 22 to flip.

[0080] Specifically, the gripper head 45 driving device includes a lifting cylinder 43 and a gripper head telescopic cylinder 44 mounted on the gantry frame 39. The cylinder body of the lifting cylinder 43 is hinged to the gantry frame 39, and the driving end of the lifting cylinder 43 is hinged to the gripper head telescopic cylinder 44. The cylinder body of the gripper head telescopic cylinder 44 is hinged to a support frame on the side of the gantry frame 39, and the driving end of the gripper head telescopic cylinder 44 is fixedly connected to the gripper head 45.

[0081] Taking the opening mechanism 15 as an example, in use, when the mold carriage 1 is in position, the gripper telescopic cylinder 44 extends, the lifting cylinder 43 lifts, and the gripper 45 hooks the flip cover hook 30. When the gripper telescopic cylinder 44 retracts, the hook drives the flip cover 22 latch to open backward. At the same time, the lifting cylinder 43 first rises and then falls, and the gripper 45, along with the flip cover hook 30, flips backward into place, thus opening the mold cover 25. Then the lifting cylinder 43 lowers to reset, waiting for the next carriage. The closing mechanism and the opening mechanism 15 have the same structure, but their working processes are completely opposite.

[0082] The first capping mechanism 7 and the second capping mechanism 14 both include a lifting cylinder 36, a second servo motor 37, and a second rotating head 38. The lifting cylinder 36 is mounted on the gantry 39 above the line body 2. The second servo motor 37 is mounted on the drive end of the lifting cylinder 36. The second rotating head 38 is mounted on the drive end of the second servo motor 37. The second rotating head 38 and the second nut 26 cooperate to transmit torque.

[0083] Taking the first capping mechanism 7 as an example, after the mold carriage 1 stops in position, the lifting cylinder 36 drives the second servo motor 37 and the second rotating head 38 to descend. Simultaneously, the second servo motor 37 drives the second rotating head 38 to rotate slowly. During the descent of the second rotating head 38, it aligns with the second nut 26 on the top of the flip cover 22. Then, the second servo motor 37 quickly drives the second nut 26 to rotate. The position of the second nut 26 remains fixed. The rotation of the second nut 26 causes the second screw 27 to rise. The mold cover 25 is installed at the bottom of the second screw 27. After the second screw 27 rises, it also lifts the mold cover 25, moving it away from the mold opening. After the second screw 27 reaches its position, the second servo motor 37 and the second rotating head 38 are lifted and reset by the lifting cylinder 36. The station operation ends, and the mold carriage 1 is driven forward one position by the line 2. The next mold carriage 1 then reaches its position, and the above operation is repeated. The second capping mechanism 14 has the same structure as the first capping mechanism 7, except that the output torque of the second servo motor 37 is in the opposite direction, so that the mold cap 25 can be pressed into the mold opening.

[0084] The actuator of the material handling robot 8 is the gripper 46. In the mold-open state, the material handling robot 8 controls the gripper 46 to pick up the polyurethane buffer block in the mold and place it on the weighing and sorting line 10.

[0085] The weighing and sorting line 10 includes a dropping platform 51, a feeding cylinder 52, a weighing belt 50, and a sorting chain plate line 49. The dropping platform 51 is used to receive polyurethane buffer blocks held by the self-loading robot 8. The weighing belt 50 and the feeding cylinder 52 are respectively set on opposite sides of the dropping platform 51. The feeding cylinder 52 is used to push the polyurethane buffer blocks on the dropping platform 51 onto the weighing belt 50. The weighing belt 50 is used to weigh and transfer the weighed polyurethane buffer blocks to the sorting chain plate line 49. The sorting chain plate line 49 completes sorting according to the weight information of each polyurethane buffer block.

[0086] Specifically, the sorting chain conveyor 49 is a chain structure with equally spaced chain plates. When a product enters the chain conveyor, it moves forward one unit per cycle, conveying the products sequentially backward. The chain conveyor has 15 discharge ports 53. When a product reaches its designated discharge port 53, products that meet the weight requirements are pushed out by a discharge cylinder into the material box 55 beside the line. Products that do not meet the weight requirements are conveyed along the line 2 to the defective product box 54 at the end of the line.

[0087] The cleaning robot 11 is driven by a roller brush 47, which brushes the mold cavity surface along a preset trajectory.

[0088] The actuator of the spraying robot 12 is the spray nozzle 48. The spraying robot 12 drives the spray nozzle 48 to spray the release agent onto the surface of the mold cavity along a preset trajectory.

[0089] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A fully automated production line for polyurethane buffer blocks, characterized in that: The system includes a mold, multiple working mechanisms, and a polyurethane mold conveyor line. The polyurethane mold conveyor line includes a mold trolley, on which the mold is mounted. The conveyor line transports the mold trolley to the workstations of each of the working mechanisms. Each working mechanism includes a first capping mechanism, a cap opening mechanism, a mold opening mechanism, a material handling robot, a weighing and sorting line, a cleaning robot, a spraying robot, a mold closing mechanism, a pouring mechanism, a cap closing mechanism, and a second capping mechanism. The mold trolley includes a base, a fixed mold mounting plate, a moving mold mounting plate, a flip-top, a first transmission mechanism, and a second transmission mechanism. The fixed mold mounting plate is vertically fixed to the base. The moving mold mounting plate can rotate in directions approaching and away from the fixed mold mounting plate. The fixed mold mounting plate is used to fix the fixed mold, and the moving mold mounting plate is used to fix the moving mold. When the moving mold mounting plate rotates towards the fixed mold mounting plate, it can... The moving mold is engaged with the fixed mold. When the moving mold mounting plate rotates away from the fixed mold mounting plate, it can move the moving mold away from the fixed mold. A vertical support plate is fixedly provided on the base. The flip cover is rotatably mounted on the support plate around a horizontal axis. The inner side of the flip cover is used to set the mold cover. The opening mechanism and the closing mechanism are used to drive the flip cover to flip outward and inward, respectively. Flipping the flip cover outward can move the mold cover away from the mold opening, and flipping it inward can rotate the mold cover to be directly above the mold opening. The first transmission mechanism is configured to transmit the power of the opening mechanism and the closing mechanism to the moving mold mounting plate so that the moving mold mounting plate can rotate in the direction of approaching and moving away from the fixed mold mounting plate. The second transmission mechanism is configured to transmit the power of the first capping mechanism and the second capping mechanism to the mold cover and make the mold cover approach and move away from the mold opening.

2. The fully automated production line for polyurethane buffer blocks according to claim 1, characterized in that: The polyurethane mold conveying line includes multiple sections of the line, which are arranged sequentially. Each section of the line is driven independently, and the multiple sections of the line can synchronously drive the mold trolley to move.

3. The fully automated production line for polyurethane buffer blocks according to claim 2, characterized in that: The line is a servo chain conveyor line. The bottom of the mold trolley is provided with two meshing teeth, which are arranged sequentially along the longitudinal direction of the mold trolley. The meshing teeth can mesh with the servo chain conveyor line.

4. The fully automated production line for polyurethane buffer blocks according to claim 3, characterized in that: It also includes a trolley transfer mechanism. The multiple sections of the line are divided into upper and lower layers. The trolley transfer mechanism can transport the mold trolley that has traveled to one end of the upper line to one end of the lower line and transport the mold trolley that has traveled to the other end of the lower line to the other end of the upper line.

5. The fully automated production line for polyurethane buffer blocks according to claim 4, characterized in that: The mold trolley is equipped with a clutch, which can control the raising and lowering of the meshing teeth.

6. The fully automated production line for polyurethane buffer blocks according to claim 5, characterized in that: It also includes a guide rail fixedly arranged relative to the production line, and the mold trolley is slidably arranged on the guide rail. The trolley transfer mechanism includes a horizontal push-pull device and a lifting device. There are two trolley transfer mechanisms, which are respectively arranged at the end and the beginning of the upper and lower layers of the production line. The free end of the lifting device is fixedly provided with a short guide rail and the horizontal push-pull device. The lifting device can drive the short guide rail to rise to connect with the upper layer of the guide rail and to fall to connect with the lower layer of the guide rail. The horizontal push-pull device is used to push and pull the mold trolley from the production line to the short guide rail and from the short guide rail to the production line.

7. The fully automated production line for polyurethane buffer blocks according to claim 3, characterized in that: Each of the servo chain conveyor lines includes a drive chain and a servo motor. All the servo motors operate synchronously, and the interval between adjacent drive chains is exactly an integer multiple of the drive chain pitch.

8. The fully automated production line for polyurethane buffer blocks according to claim 2, characterized in that: The first transmission mechanism includes a guide rod, a first screw, a slider, and a connecting rod. The first screw is perpendicular to the support plate. The moving mold mounting plate is disposed on the first side of the support plate. One end of the first screw is rotatably disposed on the second side of the support plate around its own axis. The slider is threadedly connected to the first screw. The guide rod is parallel to the first screw and one end is fixed on the second side of the support plate. The slider is slidably connected to the guide rod. One end of the connecting rod is hinged to the slider, and the other end is hinged to the moving mold mounting plate. The mold opening mechanism and the mold closing mechanism both include a telescopic cylinder, a first servo motor, and a first rotating head. The first servo motor is disposed on the drive end of the telescopic cylinder, and the first rotating head is disposed on the drive end of the first servo motor. The telescopic cylinder drives the first servo motor and the first rotating head to approach the first screw at the corresponding workstation until the first rotating head and the first screw are connected in transmission. The first servo motor drives the first screw to rotate, thereby driving the slider, the connecting rod, the moving mold mounting plate, and the moving mold to rotate relative to the fixed mold, thereby realizing mold closing and mold opening. The second transmission mechanism includes a second nut and a second screw. The second nut is rotatably connected to the flip cover about its own axis. The second screw is threaded into the second nut. The bottom of the second screw is located inside the flip cover and connected to the mold cover fixing seat. The first capping mechanism and the second capping mechanism control the second screw to drive the mold cover to move up and down by rotating the second nut. The first end of the flip cover is hinged to the base or the fixed mold mounting plate, and the second end is provided with a lever lock. The outer side of the moving mold mounting plate is provided with a locking hook that matches the lever lock. When the flip cover is in the inward flip state, the lever lock automatically hooks onto the locking hook under its own weight. The top of the lever lock is provided with a flip cover grab hook. Both the opening mechanism and the closing mechanism include a grab head and a grab head driving device. The grab head driving device drives the grab head to grab the flip cover grab hook and drive the lever lock to unlock and the flip cover to flip. Both the first capping mechanism and the second capping mechanism include a lifting cylinder, a second servo motor, and a second rotating head; the lifting cylinder is mounted on a gantry frame above the production line, the second servo motor is mounted on the drive end of the lifting cylinder, and the second rotating head is mounted on the drive end of the second servo motor; the second rotating head and the second nut cooperate to transmit torque. The actuator of the material handling robot is a gripper. In the mold-open state, the material handling robot controls the gripper to pick up the polyurethane buffer block inside the mold and place it on the weighing and sorting line. The weighing and sorting line includes a discharge platform, a loading cylinder, a weighing belt conveyor, and a sorting chain conveyor. The discharge platform is used to receive the polyurethane buffer blocks held by the picking robot. The weighing belt conveyor and the loading cylinder are respectively arranged on opposite sides of the discharge platform. The loading cylinder is used to push the polyurethane buffer blocks on the discharge platform onto the weighing belt conveyor. The weighing belt conveyor is used to weigh and transfer the weighed polyurethane buffer blocks to the sorting chain conveyor. The sorting chain conveyor completes the sorting according to the weight information of each polyurethane buffer block. The cleaning robot's actuator is a roller brush, which drives the roller brush to clean the mold cavity surface along a preset trajectory. The actuator of the spraying robot is a spray nozzle. The spraying robot drives the spray nozzle to spray the release agent onto the surface of the mold cavity along a preset trajectory.

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