Polyurethane mold conveying line and full-automatic production line

Abstract

The invention discloses a polyurethane mold conveying line and a full-automatic production line, and relates to the technical field of polyurethane buffer block production, and the polyurethane mold conveying line comprises a mold trolley and multiple sections of line bodies. The mold trolley is used for bearing molds; the multiple sections of line bodies are arranged in sequence; the multiple sections of line bodies are independently driven and can synchronously drive the mold trolley to move. The whole line is driven by multiple power sections, the power for driving the whole line is not limited by the length of the line body and the load of the line body any more, the large-load long-distance line body is achieved, the whole is broken up into parts, the purposes of reducing the load of a single power and reducing the inertia of the line body are achieved, pause is reduced, and then the production efficiency and quality are improved.

Description

Technical Field

[0001] The invention relates to the technical field of polyurethane buffer block production, in particular to a polyurethane mold conveyor line and a full-automatic production line. Background Art

[0002] In the production process of polyurethane buffer blocks, an important problem currently faced is the poor operation of the line in the fully automatic production line. Specifically, the line continues to creep, and all mold trolleys are driven as a whole. However, due to the heavy total weight of the mold trolley and the mold, the line has obvious setbacks during operation. This situation seriously affects production efficiency and product quality. Summary of the invention

[0003] The purpose of the present invention is to provide a polyurethane mold conveyor line and a fully automatic production line to solve the problems existing in the above-mentioned prior art and improve production efficiency and product quality.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a polyurethane mold conveyor line, comprising: a mold trolley and a multi-section line body. The mold trolley is used to carry the mold; the multi-section line body is arranged in sequence; the multi-section line body is driven independently respectively, and the multi-section line body can synchronously drive the mold trolley to move.

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

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

[0008] Preferably, the mold trolley is provided with a clutch, and the clutch can control the rise and fall of the meshing teeth.

[0009] Preferably, it also includes a guide rail fixedly arranged relative to the wire body, the mold trolley is slidably arranged on the guide rail, the trolley transfer mechanism includes a horizontal push-pull device and a lifting device, two trolley transfer mechanisms are provided, and the two trolley transfer mechanisms are respectively arranged at the end and the starting end of the upper and lower wire bodies, and 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 guide rail and descend to connect with the lower guide rail, and the horizontal push-pull device is used to push and pull the mold trolley from the wire body to the short guide rail and from the short guide rail to the wire body.

[0010] Preferably, each of the servo chain conveyor lines comprises a drive chain and a servo motor, all of the servo motors operate synchronously, and the interval between the front and rear adjacent drive chains is exactly equal to an integral multiple of the pitch of the drive chain.

[0011] The present invention also provides a fully automatic production line for polyurethane buffer blocks, comprising a mold, a plurality of working mechanisms and the polyurethane mold conveyor line as described above; the mold is arranged on the mold trolley, and the polyurethane mold conveyor line can convey the mold trolley to the workstations of each of the working mechanisms.

[0012] Preferably, the working mechanism includes a first capping mechanism, a capping mechanism, a mold opening mechanism, a material picking robot, a weighing and sorting line, a cleaning robot, an oil injection robot, a mold closing mechanism, a material 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 movable mold mounting plate, a flip cover, a first transmission mechanism and a second transmission mechanism, the fixed mold mounting plate is vertically fixedly arranged on the base, the movable mold mounting plate can rotate in the direction close to and away from the fixed mold mounting plate, the fixed mold mounting plate is used to fix the fixed mold, and the movable mold mounting plate is used to fix the movable mold, when the movable mold mounting plate rotates in the direction close to the fixed mold mounting plate, the movable mold can be driven to buckle on the fixed mold, and when the movable mold mounting plate rotates in the direction away from the fixed mold mounting plate, the movable mold can be driven away from the fixed mold, a vertical support plate is fixedly arranged on the base, and the flip cover can rotate in the direction close to the fixed mold mounting plate. The cover is rotatably arranged on the support plate around a horizontal axis, the inner side of the flip cover is used to arrange a mold cover, the cover opening mechanism and the cover closing mechanism are respectively used to drive the flip cover to flip outward and inward, the flip cover flipping outward can drive the mold cover away from the die opening, and the inward turning can drive the mold cover to flip to just above the die opening; the first transmission mechanism is constructed to transmit the power of the mold opening mechanism and the mold closing mechanism to the movable mold mounting plate to drive the movable mold mounting plate to rotate in a direction close to and away from the fixed mold mounting plate; the second transmission mechanism is constructed to transmit the power of the first cover rotating mechanism and the second cover rotating mechanism to the mold cover and make the mold cover close to and away from the die opening.

[0014] Preferably, the first transmission mechanism comprises a guide rod, a first screw rod, a slider and a connecting rod, the first screw rod is perpendicular to the support plate, the movable mold mounting plate is arranged on the first side of the support plate, one end of the first screw rod is rotatably arranged on the second side of the support plate around its own axis, the slider is threadedly connected to the first screw rod, the guide rod is parallel to the first screw rod and one end is fixed to 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 movable mold mounting plate, the mold opening mechanism and the mold closing mechanism both comprise a telescopic cylinder, a first servo motor and a first rotating head, the first servo motor is arranged at the driving end of the telescopic cylinder, the first rotating head is arranged at the driving end of the first servo motor, the telescopic cylinder drives the first servo motor and the first rotating head to approach the first screw rod on the corresponding station until the first rotating head and the first screw rod are in driving connection, the first servo motor drives the first screw rod to rotate to drive the slider rod, the connecting rod, the movable mold mounting plate and the movable mold to rotate relative to the fixed mold to achieve 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 around its own axis, the second screw is threadedly connected to the second nut, the bottom of the second screw is located inside the flip cover and connected to the mold cover fixing seat, and the first and second capping mechanisms 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 buckle. The outer side of the movable mold mounting plate is provided with a lock hook matching the lever lock buckle. When the flip cover is in the inward state, the lever lock buckle automatically hooks on the lock hook under the action of its own gravity; a flip cover grab hook is provided on the top of the lever lock buckle, and the cover opening mechanism and the cover closing mechanism both include a grab head and a grab head driving device, and the grab head driving device drives the grab head to grab the flip cover grab hook and drive the lever lock buckle to unlock and flip the flip cover;

[0017] The first capping mechanism and the second capping mechanism both include a lifting cylinder, a second servo motor and a second rotating head; the lifting cylinder is arranged on a gantry above the line body, the second servo motor is arranged at a driving end of the lifting cylinder, the second rotating head is arranged at a driving end of the second servo motor, and the second rotating head cooperates with the second nut to realize torque transmission;

[0018] The execution end of the material-picking robot is a gripper. In the mold opening state, the material-picking robot controls the gripper to grip the polyurethane buffer block in the mold and place it on the weighing and sorting line;

[0019] The weighing and sorting line includes a material drop table, a feeding cylinder, a weighing belt line, and a sorting chain plate line; the material drop table is used to receive the polyurethane buffer block clamped by the material picking robot, the weighing belt line and the feeding cylinder are respectively arranged on two opposite sides of the material drop table, the feeding cylinder is used to push the polyurethane buffer block on the material drop table to the weighing belt line, the weighing belt line is used to weigh and transfer the weighed polyurethane buffer block to the sorting chain plate line, and the sorting chain plate line completes sorting according to the weight information of each polyurethane buffer block;

[0020] The execution end of the cleaning robot is a roller brush, and the cleaning robot drives the roller brush to brush the surface of the mold cavity of the mold along a preset trajectory;

[0021] The execution end of the oil injection robot is an oil injection nozzle, and the oil injection robot drives the oil injection nozzle along a preset trajectory to spray the release agent on the cavity surface of the mold.

[0022] Compared with the prior art, the present invention has achieved the following technical effects:

[0023] 1. The whole line of the present invention is driven by multiple power segments, so that the power of the whole line driving is no longer restricted by the length and load of the line, and a large-load long-distance line is realized, which reduces the single power load and the inertia of the line, reduces setbacks, and thus improves production efficiency and quality.

[0024] 2. The wire body is divided into two layers, the lower layer refluxes, and the two ends are connected by lifting and lowering, so as to achieve stable reflux of the wire body without stagnation and setbacks.

[0025] 3. The servo motor drives the chain to drive the mold trolley to work according to the set rhythm, so that the mold trolley can move and stop quickly and stably, so that all operating equipment can work at a fixed point after the mold trolley stops, without considering the influence of the line movement.

[0026] 4. The present invention adopts an integrated flip cover closing mechanism to fix the relative position of the mold cover and the mold cavity. After the cover is flipped and closed, the mold cover is just opposite the mold opening, and the second screw rod is lowered by rotating the second nut on the top, driving the mold cover to be pressed tightly against the mold cavity, achieving a 100% cover closing success rate, while avoiding the robot's grasping and placement accuracy being affected by the following accuracy and possible abnormal collisions.

[0027] 5. The mold trolley of the present invention adopts a method in which the movable mold and the fixed mold are fixed separately, the fixed mold is stationary, and the movable mold is connected by a connecting rod and a slider, and the slider is driven to move forward and backward by the rotation of the first screw, thereby achieving the action of driving the movable mold to open and close by the rotation of the first screw, and at the same time achieving the purpose of locking the mold by outputting a certain torque to lock the slider, making the locking action controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic structural diagram of a fully automatic production line for a polyurethane buffer block provided in an embodiment of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the line body and the guide rail;

[0031] Figure 3 It is a structural schematic diagram when the fixed mold mounting plate and the movable mold mounting plate of the mold carriage are in a mold closing state and the flip cover is in a buckled state;

[0032] Figure 4 It is a structural schematic diagram when the flip cover is in an open state, and the fixed mold mounting plate and the movable mold mounting plate are in a mold closing state;

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

[0034] Figure 6 It is a structural schematic diagram of the flip cover in a buckled state;

[0035] Figure 7 for Figure 1 A magnified view of the structure at center A;

[0036] Figure 8 for Figure 1 A magnified view of the structure at B in the middle;

[0037] Fig. 9 It is a structural schematic diagram of the mold opening mechanism and the mold closing mechanism;

[0038] Fig.10 It is a structural schematic diagram of the cover opening mechanism and the cover closing mechanism;

[0039] Fig.11 for Fig.10 A magnified view of the structure at center A;

[0040] Fig.12 This is a schematic diagram of the structure of the material-retrieving robot;

[0041] Fig.13 It is a structural schematic diagram of the cleaning mechanism;

[0042] Fig.14 It is a structural schematic diagram of the fuel injection mechanism;

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

[0044] In the figure: 1-mold trolley; 2-line body; 3-trolley transfer mechanism; 4-guide rail; 5-meshing teeth; 6-clutch; 7-first capping mechanism; 8-feeding robot; 9-mold opening mechanism; 10-weighing and sorting line; 11-cleaning robot; 12-oil injection robot; 13-mold clamping mechanism; 14-second capping mechanism; 15-capping mechanism; 20-movable 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-lock hook; 30-flip cover Cover grab hook; 31-guide rod; 32-first screw rod; 33-slider; 34-connecting rod; 35-guide wheel; 36-lifting cylinder; 37-second servo motor; 38-second rotating head; 39-gantry; 40-telescopic cylinder; 41-first servo motor; 42-first rotating head; 43-lifting cylinder; 44-telescopic cylinder for grabbing head; 45-grabbing head; 46-gripping hand; 47-rolling brush; 48-injection nozzle; 49-sorting chain plate line; 50-weighing belt line; 51-dropping table; 52-loading cylinder; 53-discharging port; 54-rejected product box; 55-material box. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] To facilitate understanding, some examples known to the inventors are described.

[0048] The existing production lines are all slow-moving production lines. All mold trolleys are driven as a whole. The total weight of the mold trolley and the mold is too large. There are obvious setbacks when the line is running, which leads to discontinuity in the production process and increases production time and cost. On the one hand, setbacks may have adverse effects on the polyurethane buffer blocks being processed, such as surface defects, dimensional deviations, etc., which reduce the qualified rate of the product. It is not conducive to high-efficiency and high-quality production. On the other hand, the existing fully automatic production line of polyurethane buffer blocks did not fully consider the total weight of the mold trolley and the mold during design, resulting in the drive system, transmission components, tracks and control systems. It is difficult to adapt to heavy-load operation in actual production. Therefore, there is an urgent need for an improved technical solution to solve this problem in order to improve the production efficiency and quality of polyurethane buffer blocks.

[0049] Combine the following Figures 1 to 15 , describing an embodiment of the present invention.

[0050] The present invention provides a polyurethane mold conveying line, such as Figure 1-2 As shown, it includes: a mold trolley 1 and a multi-segment linear body 2. The mold trolley 1 is used to carry the mold; the multi-segment linear body 2 is arranged in sequence; the multi-segment linear body 2 is driven independently respectively, and the multi-segment linear body 2 can synchronously drive the mold trolley 1 to move.

[0051] The entire line of the embodiment of the present invention is driven by multiple power segments, so that the power driving the entire line is no longer restricted by the line length and line load, and a large-load long-distance line can be achieved, thereby reducing the single power load and the line inertia, and reducing setbacks, thereby improving production efficiency and quality.

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

[0053] When in use, the two meshing teeth 5 can be driven by the same section of the wire body 2, or can be driven and stopped synchronously by two adjacent sections of the wire body 2.

[0054] This embodiment uses a servo chain conveyor line to achieve precise control of the start and stop of the mold trolley 1, so that the mold trolley 1 can be accurately stopped at the corresponding work station.

[0055] In the related art, the line body 2 is usually arranged on the same horizontal plane, which results in errors in the moving speed of the mold trolley 1 at the bend of the chain due to the influence of the turning radius, thereby affecting the accuracy and running smoothness of the line body 2. In order to solve the above problems.

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

[0057] The wire body 2 in this embodiment is divided into two layers, the lower layer is refluxed, and the two ends are butted by lifting and lowering, so that the wire body 2 can be refluxed stably without stagnation and setbacks.

[0058] In some embodiments, a clutch 6 is provided on the mold trolley 1, and the clutch 6 can control the rise and fall of the meshing teeth 5. The clutch 6 is arranged at the bottom of the mold trolley 1, and the meshing teeth 5 are arranged at the bottom of the clutch 6. The clutch drives the rise and fall of the meshing teeth 5 through linear driving components such as electric cylinders, air cylinders or hydraulic cylinders.

[0059] In this embodiment, the meshing teeth 5 and the servo chain conveyor line are engaged and disengaged. Specifically, when the clutch 6 controls the meshing teeth 5 to descend to the height set by the control system, the meshing teeth 5 mesh with the servo chain conveyor line and realize transmission. When the clutch 6 controls the meshing teeth 5 to rise to the height set by the control system, the meshing teeth 5 disengage from the servo chain conveyor line. The specific control logic is input into the control system in advance.

[0060] In some embodiments, the embodiments of the present invention also include a guide rail 4 fixedly arranged relative to the wire body 2, the mold trolley 1 is slidably arranged on the guide rail 4, the trolley transfer mechanism 3 includes a horizontal push-pull device and a lifting device, and two trolley transfer mechanisms 3 are provided. The two trolley transfer mechanisms 3 are respectively arranged at the end and the starting end of the upper and lower wire bodies 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 guide rail 4 and descend to connect with the lower guide rail 4. The horizontal push-pull device is used to push and pull the mold trolley 1 from the wire body 2 to the short guide rail and from the short guide rail to the wire body 2.

[0061] This embodiment realizes the up and down transportation of the mold trolley 1. In the working state, all the wire bodies 2 are controlled to move at the same beat and speed to ensure that the mold trolley 1 can smoothly complete the alternation when passing through the intersection of two adjacent wire bodies 2.

[0062] When the mold trolley 1 on the upper line body 2 needs to be transferred to the lower part, when the mold trolley 1 moves to the end of the upper line body 2, the clutch 6 controls the meshing teeth 5 to rise to release the meshing relationship, and then the horizontal push-pull device hooks the corresponding part of the mold trolley 1 and pulls the mold trolley 1 toward the short guide rail until it moves to the set position. The lifting device drives the short guide rail and the mold trolley 1 thereon to descend until the short guide rail is connected with the guide rail 4 below, and then the horizontal push-pull device is used to push the mold trolley 1 to the guide rail 4 below, thereby completing the transfer from top to bottom.

[0063] Since the line body 2 drives the mold trolley 1 to move according to the set beat, when the time interval between two adjacent beats is short, the trolley transfer mechanism transfers multiple mold trolleys 1 at one time, such as two, three, etc., and takes the transfer of two at a time as an example. When the first mold trolley moves to the end of the upper line body 2, the clutch of the first mold trolley is controlled to lift the meshing tooth 5 to stop it. After waiting for one beat, the second mold trolley moves close to the first mold trolley, and the clutch 6 on the second mold trolley is controlled to lift the meshing tooth 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 into place, the horizontal push-pull device simultaneously pushes the two mold trolleys onto the lower guide rail 4, and then the lifting device drives the lifting platform to rise. The clutch 6 on the two mold trolleys on the lower guide rail 4 drives the meshing tooth 5 to descend and complete the meshing at a specific time under the control of the control system for transmission.

[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 relatively short, for example, it can be between 5 and 20 mm. Of course, in some embodiments, an additional horizontal driving device can be provided 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 distance.

[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 equal to an integer multiple of the pitch of the drive chain.

[0066] In some embodiments, two sets of front and rear guide wheels 35 are disposed at the bottom of the mold trolley 1 , and two guide rails 4 are disposed. The two sets of guide wheels 35 are respectively disposed on the sides of the two guide rails 4 that are away from each other.

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

[0068] In some embodiments, the driving chains are composed of three rows of roller chains, and the meshing teeth 5 only mesh with the middle chain.

[0069] The present invention also provides a fully automatic production line for polyurethane buffer blocks, such as Figure 1 to Figure 15 As shown, it includes a mold, multiple working mechanisms and the above-mentioned polyurethane mold conveying line; the mold is arranged on the mold trolley 1, and the polyurethane mold conveying line can convey the mold trolley 1 to the workstation of each working mechanism.

[0070] In this embodiment, when the mold trolley 1 is driven by the line body 2 to move to each workstation and stops, the equipment beside each workstation performs corresponding work on the mold on the mold trolley 1.

[0071] In addition, this embodiment has all the advantages of the above embodiments, which will not be described in detail 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 picking robot 8, a weighing and sorting line 10, a cleaning robot 11, an oil injection 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 capping mechanism 15, the mold opening mechanism 9, the material picking robot 8, the cleaning robot 11, the oil injection robot 12, the mold closing mechanism 13, the material pouring mechanism, the capping mechanism and the second capping mechanism 14 are arranged in sequence along the moving 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] In order to facilitate understanding of the following embodiments, the composition of the mold is first explained. The mold includes a movable mold, a fixed mold and a mold cover 25. The bottom of the movable mold and the bottom of the fixed mold are hinged. The movable mold is rotated in the direction away from the fixed mold to open the mold, and the movable mold is rotated in the direction close to the fixed mold to close the mold. The mold needs to be opened before the polyurethane buffer block is taken out. Before pouring polyurethane fluid into the mold, the mold needs to be closed, leaving only the top mold opening, and then the material is poured into the mold through the mold opening. After the mold cover 25 is covered on the mold opening, the mold is completely closed to shape the material inside to form a polyurethane buffer block.

[0075] In some embodiments, the mold trolley 1 includes a base 23, a fixed mold mounting plate 24, a movable 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, and the movable mold mounting plate 20 can rotate in the direction close to and away from the fixed mold mounting plate 24. The fixed mold mounting plate 24 is used to fix the fixed mold, and the movable mold mounting plate 20 is used to fix the movable mold. When the movable mold mounting plate 20 rotates in the direction close to the fixed mold mounting plate 24, it can drive the movable mold to buckle on the fixed mold. When the movable mold mounting plate 20 rotates in the direction away from the fixed mold mounting plate 24, it can drive the movable mold away from the fixed mold. A vertical support plate is fixedly provided on the base 23 21, the flip cover 22 is rotatably arranged on the support plate 21 around a horizontal axis, the inner side of the flip cover 22 is used to set the mold cover 25, the cover opening mechanism 15 and the cover closing mechanism are respectively used to drive the flip cover 22 to turn outward and inward, the flip cover 22 can turn outward to drive the mold cover 25 away from the die opening, and the inward turning can drive the mold cover 25 to turn over to just above the die opening; the first transmission mechanism is constructed to transmit the power of the mold opening mechanism 9 and the mold closing mechanism 13 to the movable mold mounting plate 20 to drive the movable mold mounting plate 20 to rotate in the direction of approaching and moving away from the fixed mold mounting plate 24; the second transmission mechanism is constructed to transmit the power of the first cover rotating mechanism 7 and the second cover rotating mechanism 14 to the mold cover 25 and make the mold cover 25 approach and move away from the die opening.

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

[0077] In some embodiments, the first transmission mechanism includes a guide rod 31, a first screw rod 32, a slider 33 and a connecting rod 34, the first screw rod 32 is perpendicular to the support plate 21, the movable mold mounting plate 20 is arranged on the first side of the support plate 21, one end of the first screw rod 32 is rotatably arranged on the second side of the support plate 21 around its own axis, the slider 33 is threadedly connected to the first screw rod 32, the guide rod 31 is parallel to the first screw rod 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 movable mold mounting plate 20, and the mold opening mechanism 9 is The mold clamping mechanism 13 includes a telescopic cylinder 40, a first servo motor 41 and a first rotating head 42. The first servo motor 41 is arranged at the driving end of the telescopic cylinder 40, and the first rotating head 42 is arranged at the driving 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 on the corresponding 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 to drive the slider 33, the connecting rod 34, the movable mold mounting plate 20 and the movable mold to rotate relative to the fixed mold to achieve mold clamping 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 threadedly connected to the second nut 26. The bottom of the second screw 27 is located inside the flip cover 22 and connected to the fixed seat of the mold cover 25. The first cover screwing mechanism 7 and the second cover screwing 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 movable mold mounting plate 20 is provided with a lock hook 29 matching the lever lock 28. When the flip cover 22 is turned inward, the lever lock 28 is automatically hooked on the lock hook 29 under the action of its own gravity; a flip cover grab 30 is provided on the top of the lever lock 28, and the cover opening mechanism 15 and the cover closing mechanism both include a grab head 45 and a grab head 45 driving device, and the grab head 45 driving device drives the grab head 45 to grab the flip cover grab 30 and drive the lever lock 28 to unlock and flip the flip cover 22;

[0080] Specifically, the grab head 45 driving device includes a lifting cylinder 43 and a grab head telescopic cylinder 44 which are arranged on the gantry 39. The cylinder body of the lifting cylinder 43 is hinged on the gantry 39, and the driving end of the lifting cylinder 43 is hinged to the grab head telescopic cylinder 44. The cylinder body of the grab head telescopic cylinder 44 is hinged to the support frame beside the gantry 39, and the driving end of the grab head telescopic cylinder 44 is fixedly connected to the above-mentioned grab head 45.

[0081] Take the cover opening mechanism 15 as an example for explanation. When in use, when the mold trolley 1 is in place, the gripping head telescopic cylinder 44 extends, the lifting cylinder 43 rises, and the gripping head 45 hooks the flip cover grab 30. When the gripping head telescopic cylinder 44 retracts, the grabbing hook drives the flip cover 22 lock to open backwards. At the same time, the lifting cylinder 43 rises first and then falls. The gripping head 45 flips the flip cover grab 30 backwards into place, and the mold cover 25 is flipped open. Then the lifting cylinder 43 falls and resets, waiting for the next trolley. The cover closing mechanism and the cover opening mechanism 15 have the same structure, but the working process is 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 arranged on a gantry 39 above the line body 2, the second servo motor 37 is arranged at the driving end of the lifting cylinder 36, the second rotating head 38 is arranged at the driving end of the second servo motor 37, and the second rotating head 38 cooperates with the second nut 26 to realize the transmission of torque;

[0083] Take the first capping mechanism 7 as an example to illustrate. When the mold trolley 1 stops in place, the lifting cylinder 36 drives the second servo motor 37 and the second rotating head 38 to descend. At the same time, the second servo motor 37 drives the second rotating head 38 to rotate slowly. During the descent of the second rotating head 38, it fits with the second nut 26 at 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 unchanged. The rotation of the second nut 26 will drive the second screw 27 to lift. The mold cover 25 is installed at the bottom of the second screw 27. After the second screw 27 is lifted, it drives the mold cover 25 to lift together and leave the mold mouth. After the second screw 27 is lifted in place, the second servo motor 37 and the second rotating head 38 are driven by the lifting cylinder 36 to lift and reset. After the station action is completed, the mold trolley 1 is driven by the line body 2 to move forward one grid. The next mold trolley 1 is in place again, and the above action is repeated. The second capping mechanism 14 has the same structure as the first capping mechanism 7 , and the only difference is that the second servo motor 37 outputs torque in the opposite direction, so that the mold cap 25 can be pressed against the mold opening.

[0084] The execution end of the material picking robot 8 is a gripper 46. In the mold opening state, the material picking robot 8 controls the gripper 46 to grip 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 material drop table 51, a feeding cylinder 52, a weighing belt line 50, and a sorting chain plate line 49; the material drop table 51 is used to receive the polyurethane buffer blocks clamped by the self-collecting robot 8, the weighing belt line 50 and the feeding cylinder 52 are respectively arranged on the opposite sides of the material drop table 51, the feeding cylinder 52 is used to push the polyurethane buffer blocks on the material drop table 51 onto the weighing belt line 50, the weighing belt line 50 is used to weigh and transfer the weighed polyurethane buffer blocks to the sorting chain plate line 49, and the sorting chain plate line 49 completes sorting according to the weight information of each polyurethane buffer block;

[0086] Specifically, the sorting chain plate line 49 is a chain plate structure with equidistant spacing. After the product enters the chain plate line, the chain plate line moves forward one grid per beat, and the product is transported backward in sequence. There are 15 discharge ports 53 on the chain plate line. When the product reaches the predetermined discharge port 53, the product with qualified weight will be pushed out by the discharge cylinder into the material box 55 beside the line. The product with unqualified weight will be transported along the line body 2 to the unqualified product box 54 at the end of the line.

[0087] The execution end of the cleaning robot 11 is a roller brush 47, and the cleaning robot 11 drives the roller brush 47 to brush the surface of the mold cavity along a preset trajectory;

[0088] The execution end of the oil injection robot 12 is the oil injection nozzle 48 . The oil injection robot 12 drives the oil injection nozzle 48 to spray the release agent on the cavity surface of the mold along a preset trajectory.

[0089] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A polyurethane mold conveyor line, characterized in that: include: Mould trolley, used to carry moulds; The multiple-segment wire body is arranged in sequence; the multiple-segment wire body is driven independently respectively, and the multiple-segment wire body can synchronously drive the mold trolley to move.

2. The polyurethane mold conveyor line according to claim 1, characterized in that: The line body is a servo chain conveyor line, and two meshing teeth are arranged at the bottom of the mold trolley. The two meshing teeth are arranged in sequence along the longitudinal direction of the mold trolley, and the meshing teeth can mesh with the servo chain conveyor line.

3. The polyurethane mold conveyor line according to claim 2, characterized in that: It also includes a trolley transfer mechanism. The multiple sections of the wire body are divided into two layers, an upper layer and an lower layer. The trolley transfer mechanism can transport the mold trolley that travels to one end of the upper layer wire body to one end of the lower layer wire body, and can transport the mold trolley that travels to the other end of the lower layer wire body to the other end of the upper layer wire body.

4. The polyurethane mold conveyor line according to claim 3, characterized in that: The mold trolley is provided with a clutch, and the clutch can control the rise and fall of the meshing teeth.

5. The polyurethane mold conveyor line according to claim 4, characterized in that: It also includes a guide rail fixedly arranged relative to the wire body, the mold trolley is slidably arranged on the guide rail, the trolley transfer mechanism includes a horizontal push-pull device and a lifting device, two trolley transfer mechanisms are provided, and the two trolley transfer mechanisms are respectively arranged at the end and the starting end of the upper and lower wire bodies, and 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 guide rail and descend to connect with the lower guide rail, and the horizontal push-pull device is used to push and pull the mold trolley from the wire body to the short guide rail and from the short guide rail to the wire body.

6. The polyurethane mold conveyor line according to claim 2, characterized in that: Each of the servo chain conveyor lines comprises a driving chain and a servo motor, all of the servo motors operate synchronously, and the interval between the front and rear adjacent driving chains is just equal to an integral multiple of the driving chain pitch.

7. A fully automatic production line of polyurethane buffer blocks, characterized in that: It comprises a mold, a plurality of working mechanisms and the polyurethane mold conveying line according to any one of claims 1 to 6; the mold is arranged on the mold trolley, and the polyurethane mold conveying line can convey the mold trolley to the workstations of each of the working mechanisms.

8. The fully automatic production line of polyurethane buffer blocks according to claim 7 is characterized in that: The working mechanism includes a first capping mechanism, a capping mechanism, a mold opening mechanism, a material taking robot, a weighing and sorting line, a cleaning robot, an oil injection robot, a mold closing mechanism, a material pouring mechanism, a cap closing mechanism and a second capping mechanism.

9. The fully automatic production line of polyurethane buffer blocks according to claim 8, characterized in that: The mold trolley includes a base, a fixed mold mounting plate, a movable 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, and the movable mold mounting plate can rotate in the direction close to and away from the fixed mold mounting plate. The fixed mold mounting plate is used to fix the fixed mold, and the movable mold mounting plate is used to fix the movable mold. When the movable mold mounting plate rotates in the direction close to the fixed mold mounting plate, the movable mold can be driven to buckle on the fixed mold. When the movable mold mounting plate rotates in the direction away from the fixed mold mounting plate, the movable mold can be driven away from the fixed mold. A vertical support plate is fixedly arranged on the base, and the flip cover rotates around A horizontal axis is rotatably arranged on the support plate, the inner side of the flip cover is used to arrange a mold cover, the cover opening mechanism and the cover closing mechanism are respectively used to drive the flip cover to flip outward and inward, the flip cover flipping outward can drive the mold cover away from the die opening, and the inward turning can drive the mold cover to flip to just above the die opening; the first transmission mechanism is constructed to transmit the power of the mold opening mechanism and the mold closing mechanism to the movable mold mounting plate to drive the movable mold mounting plate to rotate in a direction close to and away from the fixed mold mounting plate; the second transmission mechanism is constructed to transmit the power of the first cover rotating mechanism and the second cover rotating mechanism to the mold cover and make the mold cover close to and away from the die opening.

10. The fully automatic production line of polyurethane buffer blocks according to claim 9, characterized in that: The first transmission mechanism comprises a guide rod, a first screw rod, a slider and a connecting rod, the first screw rod is perpendicular to the support plate, the movable mold mounting plate is arranged on the first side of the support plate, one end of the first screw rod is rotatably arranged on the second side of the support plate around its own axis, the slider rod is threadedly connected to the first screw rod, the guide rod is parallel to the first screw rod and one end is fixed to the second side of the support plate, the slider rod is slidably connected to the guide rod, one end of the connecting rod is hinged to the slider rod, and the other end is hinged to the movable mold mounting plate, the mold opening mechanism and the mold closing mechanism both comprise a telescopic cylinder, a first servo motor and a first rotating head, the first servo motor is arranged at the driving end of the telescopic cylinder, the first rotating head is arranged at the driving end of the first servo motor, the telescopic cylinder drives the first servo motor and the first rotating head to approach the first screw rod on the corresponding station until the first rotating head and the first screw rod are in transmission connection, the first servo motor drives the first screw rod to rotate to drive the slider rod, the connecting rod, the movable mold mounting plate and the movable mold to rotate relative to the fixed mold to achieve 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 around its own axis, the second screw is threadedly connected to the second nut, the bottom of the second screw is located inside the flip cover and connected to the mold cover fixing seat, and the first and second capping mechanisms 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 buckle. The outer side of the movable mold mounting plate is provided with a lock hook matching the lever lock buckle. When the flip cover is in the inward state, the lever lock buckle automatically hooks on the lock hook under the action of its own gravity; a flip cover grab hook is provided on the top of the lever lock buckle, and the cover opening mechanism and the cover closing mechanism both include a grab head and a grab head driving device, and the grab head driving device drives the grab head to grab the flip cover grab hook and drive the lever lock buckle to unlock and flip the flip cover; The first capping mechanism and the second capping mechanism both include a lifting cylinder, a second servo motor and a second rotating head; the lifting cylinder is arranged on a gantry above the line body, the second servo motor is arranged at a driving end of the lifting cylinder, the second rotating head is arranged at a driving end of the second servo motor, and the second rotating head cooperates with the second nut to realize torque transmission; The execution end of the material-picking robot is a gripper. In the mold opening state, the material-picking robot controls the gripper to grip the polyurethane buffer block in the mold and place it on the weighing and sorting line; The weighing and sorting line includes a material drop table, a feeding cylinder, a weighing belt line, and a sorting chain plate line; the material drop table is used to receive the polyurethane buffer block clamped by the material picking robot, the weighing belt line and the feeding cylinder are respectively arranged on two opposite sides of the material drop table, the feeding cylinder is used to push the polyurethane buffer block on the material drop table to the weighing belt line, the weighing belt line is used to weigh and transfer the weighed polyurethane buffer block to the sorting chain plate line, and the sorting chain plate line completes sorting according to the weight information of each polyurethane buffer block; The execution end of the cleaning robot is a roller brush, and the cleaning robot drives the roller brush to brush the surface of the mold cavity of the mold along a preset trajectory; The execution end of the oil injection robot is an oil injection nozzle, and the oil injection robot drives the oil injection nozzle along a preset trajectory to spray the release agent on the cavity surface of the mold.

Images