Automatic production line for casting polyurethane

Abstract

The utility model discloses an automatic pouring polyurethane production line which comprises a pouring conveying line, a first tunnel type heating conveying line, a product circulation conveying line and a second tunnel type heating conveying line which are sequentially arranged and connected end to end and are matched to form a rotary flowing platform, and a plurality of tool plates are arranged on the rotary flowing platform. A mold is placed on the tool plate, and the tool plate circularly moves on the rotary flowing platform; a pouring machine is arranged on one side of the pouring conveying line, a movable track is arranged at the bottom of the pouring machine, and the pouring machine moves along the movable track and pours materials into the mold on the pouring conveying line; the first tunnel type heating conveying line is used for carrying out high-temperature vulcanization on polyurethane in the mold; the second tunnel type heating conveying line is used for preheating the tool plate and the mold; a finished product discharging mechanism is arranged on the product circulation conveying line. According to the utility model, the production process precision of the casting polyurethane product can be effectively controlled, the product quality is improved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of the preparation of cast polyurethane, in particular to an automatic production line for cast polyurethane. Background Art

[0002] Cast polyurethane is formed into polyurethane products through high-temperature vulcanization and tooling plate forming processes from liquid polymers; cast polyurethane elastomer (CPU) is a product produced by pouring liquid reactive polymers into molds on tooling plates. As a major branch of polyurethane, its soft and hard two-phase structure endows it with good mechanical, physical, and chemical properties, and it is widely used in various fields of the national economy. Related products are spread across many industries such as chemical industry, electronics, automotive, national defense, aerospace, medical, and construction.

[0003] During the forming and high-temperature vulcanization stages, polyurethane polymers are highly sensitive to the temperature of the molds and the ambient temperature. When manually handling, the weight of the molds and the high temperature have a great impact on workers. When the molds are exposed to the air, the ambient temperature has a great impact on the temperature of the molds and the internal materials. The too-fast temperature loss of the molds will directly affect the quality of the products.

[0004] Therefore, there is an urgent need to propose an automatic production line for cast polyurethane. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide an automatic production line for cast polyurethane, which can effectively control the production process precision of cast polyurethane products, improve product quality, and reduce the labor intensity of workers.

[0006] To solve the above technical problem, the utility model provides an automatic production line for cast polyurethane, which includes a pouring conveyor line, a first tunnel heating conveyor line, a product transfer conveyor line, and a second tunnel heating conveyor line that are arranged in sequence and connected end to end, and cooperate to form a rotary flow platform. A number of tooling plates are arranged on the rotary flow platform, and molds are arranged on the tooling plates. The tooling plates move in a cycle on the rotary flow platform;

[0007] A pouring machine is arranged on one side of the pouring conveyor line. A moving track is arranged at the bottom of the pouring machine, and the pouring machine moves along the moving track and pours materials into the molds on the pouring conveyor line;

[0008] The first tunnel heating conveyor line and the second tunnel heating conveyor line are respectively used for high-temperature vulcanization of the polyurethane in the molds, and preheating of the tooling plates and molds;

[0009] A finished product blanking mechanism is arranged on the product transfer conveyor line.

[0010] Furthermore, lifting and transferring machines are provided between the casting conveying line and the first tunnel-type heating conveying line, between the first tunnel-type heating conveying line and the product transfer conveying line, between the product transfer conveying line and the second tunnel-type heating conveying line, and between the second tunnel-type heating conveying line and the casting conveying line.

[0011] Furthermore, the lifting and transferring machine includes a first fixed bottom plate, a first lifting plate is arranged above the first fixed bottom plate, a chain driving assembly is arranged on the first lifting plate, a first lifting cylinder connected to the first lifting plate is arranged on the first fixed bottom plate, a first guiding assembly is further arranged between the first fixed bottom plate and the first lifting plate, and a lateral baffle is arranged on one side of the first lifting plate.

[0012] Furthermore, a drum-type inclined lifting conveying assembly is arranged on one side of the product transfer conveying line. One end of the drum-type inclined lifting conveying assembly is axially connected to the product transfer conveying line. An inclined lifting cylinder is further arranged between the drum-type inclined lifting conveying assembly and the product transfer conveying line. A plurality of electric drums are arranged inside the drum-type inclined lifting conveying assembly.

[0013] Furthermore, the finished product blanking mechanism includes a second fixed bottom plate, a second lifting plate is arranged above the second fixed bottom plate, two tooling pads are arranged on the second lifting plate, a lifting and positioning mechanism is arranged between the two tooling pads, a second lifting cylinder connected to the second lifting plate is arranged on the second fixed bottom plate, and a second guiding assembly is further arranged between the second fixed bottom plate and the second lifting plate.

[0014] Furthermore, the lifting and positioning mechanism includes a connecting plate, positioning columns are arranged on the connecting plate, the connecting plate is connected to a positioning cylinder, the positioning cylinder is fixedly arranged at the bottom of the second lifting plate, and a third guiding assembly is arranged between the connecting plate and the second lifting plate.

[0015] Furthermore, first blocking mechanisms are arranged inside the first tunnel-type heating conveying line and the second tunnel-type heating conveying line on the side of the discharge end. The first blocking mechanism includes a fixed base, an upper support is arranged above the fixed base, an adjustable double-shaft cylinder is arranged between the upper support and the fixed base, a blocking bracket is axially connected to the surface of the upper support, the center of gravity of the blocking bracket is located at the rear side, and a buffer seat is arranged at the bottom of the rear side. The bottom of the buffer seat abuts against the top of the buffer frame, the buffer frame is fixedly arranged on the fixed base, and a blocking bearing is arranged at the top of the blocking bracket.

[0016] Furthermore, the buffer frame includes a buffer upper bracket and a buffer lower bracket. A guiding column and a buffer spring are arranged between the buffer upper bracket and the buffer lower bracket. A rolling bearing is arranged at the top of the buffer upper bracket, and an abutting guiding groove is arranged at the bottom of the buffer seat corresponding to the rolling bearing.

[0017] Further, a second blocking mechanism is arranged in the pouring and conveying line. The second blocking mechanism includes a mounting base plate, a circular cylinder is arranged on the mounting base plate, a connecting seat is sleeved and fixed on the circular cylinder, a rotating blocking block is pivotally connected to one side of the connecting seat, a rotation stopping groove is arranged on the other side of the connecting seat, the rotation stopping groove is in fit connection with a rotation stopping column, the rotation stopping column is arranged on the mounting base plate, and the circular cylinder abuts against the bottom of the rotating blocking block and provides rotational power.

[0018] Further, heat insulation covers are arranged at both ends of the first tunnel-type heating and conveying line and the second tunnel-type heating and conveying line, and the number of pouring machines is greater than or equal to 2.

[0019] Advantages of the utility model:

[0020] 1. The product moves along with the tooling plate and the mold, and the tooling plate and the mold are heated synchronously. When the product is in the transfer and conveying line area, since the heated tooling plate stores a large amount of heat, when the product is exposed to normal-temperature air, the heat loss of the mold is effectively slowed down, and the product defect risk caused by temperature problems can be greatly optimized.

[0021] 2. In the old production line, manual handling was carried out, running back and forth between the pouring machine and the heating oven. After the improvement, all transfers are fully automated, eliminating the need for personnel to handle various materials, reducing the labor intensity of workers. And when the product is just poured, the polyurethane is in a flowing liquid state. Originally, manual handling was prone to vibrations or shakes, which easily caused the polyurethane to overflow. The automatic transfer is more stable, eliminating the problem of polyurethane overflow. For larger and heavier materials, there is no need to worry about accidental slipping, which may cause worker injuries or product defects due to falling.

[0022] 3. The pouring machine is a movable installation structure, which can cooperate with no less than two pouring machines to realize the pouring of different sub-classified materials, and flexible production can be carried out according to the positioning and staying position of the tooling plate, improving the production efficiency of each shift. Description of the drawings

[0023] Figure 1 is the overall structural schematic diagram of the production automatic line of the utility model;

[0024] Figure 2 is the structural schematic diagram of the lifting and transplanting machine of the utility model;

[0025] Figure 3 is the structural schematic diagram of the roller-type inclined lifting and conveying assembly of the utility model;

[0026] Figure 4 is the structural schematic diagram of the finished product blanking mechanism of the utility model;

[0027] Figure 5 is a schematic structural view of the positioning part in the present utility model Figure 4 ;

[0028] Figure 6 is a schematic structural view when the first blocking mechanism of the present utility model is in use;

[0029] Figure 7 is a schematic structural view of the first blocking mechanism of the present utility model;

[0030] Figure 8 is the present utility model Figure 7 schematic structural view of the buffer frame in;

[0031] Figure 9 is a schematic structural view of the second blocking mechanism of the present utility model. Specific embodiments

[0032] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it, but the embodiments cited are not intended to limit the present utility model.

[0033] Referring to Figure 1 shown, an embodiment of the automatic production line for casting polyurethane of the present utility model includes a casting conveying line 1, a first tunnel-type heating conveying line 2, a product transfer conveying line 3, and a second tunnel-type heating conveying line 4 that are arranged in sequence and connected end to end, and cooperate to form a rotary flow platform. A number of tooling plates 5 are arranged on the rotary flow platform, and molds (the molds are not shown in the figure) are placed on the tooling plates. The tooling plates move in a cycle on the rotary flow platform; a casting machine 6 is arranged on one side of the casting conveying line, a moving track 7 is arranged at the bottom of the casting machine, and the casting machine moves along the moving track and pours materials into the molds on the casting conveying line. The number of casting machines can be 2, which can realize the casting of different sub-classified materials, improve the production flexibility, and improve the production efficiency of shifts; the first tunnel-type heating conveying line is used for high-temperature vulcanization of the polyurethane in the molds, and the second tunnel-type heating conveying line is used for preheating the tooling plates and molds. Of course, according to the transfer sequence, the functions of the first tunnel-type heating conveying line and the second tunnel-type heating conveying line can also be set in reverse; a finished product blanking mechanism is arranged on the product transfer conveying line.

[0034] Referring to Figure 1 and Figure 2As shown in the figure, in the above-mentioned pouring conveyor line, the first tunnel heating conveyor line, the product transfer conveyor line, and the second tunnel heating conveyor line, a double-speed chain is used as the transmission power component. When the mold moves with the tooling plate, it can stop moving as long as there is an obstruction. In this way, the tooling plates can be stacked, that is, the molds can be stacked, which improves the space utilization rate. Moreover, it effectively avoids the frequent start-up of the conveyor motor, effectively reduces the wear of the chain caused by starting and stopping, and improves the service life of the equipment. The conveyor line using the double-speed chain has the following advantages: 1. High efficiency: It can improve production efficiency and product quality; 2. Stability: It ensures the accuracy and durability of material transportation; 3. Flexibility: It can be designed diversely according to the needs of the production line; 4. Space saving: It realizes material transportation without increasing too much space; 5. Safety: It is very safe in design and manufacturing, ensuring the safety and stability of the production line; 6. Large load, good adaptability, and easy to maintain and repair; 7. Little noise pollution during operation.

[0035] The tooling plate can always rotate in the entire rotary flow platform. First, the tooling plate carries the mold and preheats it in the second tunnel heating conveyor line, and then rotates to the pouring conveyor line. The material is poured into the mold on the tooling plate through the pouring machine. Subsequently, the tooling plate carries the mold with the poured material and rotates from the pouring conveyor line into the first tunnel heating conveyor line for heating and vulcanization. After vulcanization, it rotates from the first tunnel heating conveyor line to the product transfer conveyor line, and the vulcanized product is removed at the finished product blanking mechanism. The tooling plate then continues to carry the mold and rotates from the product transfer conveyor line into the second tunnel heating conveyor line, and so on in a cycle.

[0036] Since the tooling plate is preheated before pouring, a large amount of heat is stored in the preheated tooling plate, which can effectively slow down the heat loss of the mold, control the temperature more accurately, and optimize the risk of product defects caused by temperature problems.

[0037] During the transfer of the tooling board, it is assisted by the lifting and transplanting machine. Specifically, lifting and transplanting machines 9 are arranged between the casting conveyor line and the first tunnel heating conveyor line, between the first tunnel heating conveyor line and the product transfer conveyor line, between the product transfer conveyor line and the second tunnel heating conveyor line, and between the second tunnel heating conveyor line and the casting conveyor line. Since both the first tunnel heating conveyor line and the second tunnel heating conveyor line have outer cover structures, it is not convenient to arrange the lifting and transplanting machines. Therefore, the four lifting and transplanting machines are arranged in pairs at both ends of the casting conveyor line and the product transfer conveyor line. The lifting and transplanting machine includes a first fixed bottom plate 10. A first lifting plate 11 is arranged above the first fixed bottom plate. A chain drive assembly 12 is arranged on the first lifting plate. A first lifting cylinder 13 connected to the first lifting plate is arranged on the first fixed bottom plate. A first guiding assembly 14 is also arranged between the first fixed bottom plate and the first lifting plate. A lateral baffle 91 is arranged on one side of the first lifting plate. When the tooling board is located at the side and needs to flow into or out of the target conveyor line, it plays the role of turning and providing transfer power. Taking the inflow as an example, the first lifting cylinder extends to lift the first lifting plate to the upper height position. At this time, the chain transmission height of the chain drive assembly is the same as the height of the previous conveyor line. Then the chain drive assembly operates to drive its chain to rotate to receive the tooling board, drive the tooling board to move above the lifting and transplanting machine, and the lateral baffle blocks its moving position. After arriving, the first lifting cylinder operates to retract, and the first lifting plate descends to the lower height position, which is lower than the transmission height of the target conveyor line. At this time, the tooling board will be left on the target conveyor line and can move on the conveyor line. Taking the outflow as an example, the tooling board will be conveyed by the assembly line to above the lifting and transplanting machine. Subsequently, the first lifting cylinder extends to lift the first lifting plate to the upper height position. During the lifting process, the first lifting plate can lift the tooling board on the conveyor line. At this time, the chain transmission height of the chain drive assembly is the same as the height of the target conveyor line (the next conveyor line that needs to be entered after flowing out). Then the chain drive assembly operates to drive its chain to rotate to send out the tooling board. After the sending is completed, the first lifting cylinder operates to retract, and the first lifting plate descends to the lower height position, waiting for the next tooling board to move above for the next outflow operation.

[0038] Refer to Figure 3As shown, a roller-type inclined lifting conveying assembly 15 is provided on one side of the product circulation conveying line. The purpose of using the roller-type inclined lifting conveying assembly is to avoid the staff from entering the interior of the automatic line from the outside, and to conveniently repair and maintain the equipment and store materials inside, thereby reducing the vacant site and improving the site utilization rate. Specifically, one end of the roller-type inclined lifting conveying assembly is connected to the product circulation conveying line shaft, and an inclined lifting cylinder 16 is also provided between the roller-type inclined lifting conveying assembly and the product circulation conveying line. A plurality of electric rollers 17 are provided in the roller-type inclined lifting conveying assembly, and the rolling avoidance effect of the roller-type inclined lifting conveying assembly can be achieved through the extension and retraction action of the inclined lifting cylinder, and it is provided with moving power by a plurality of electric rollers, and the overall structure is simple and light in weight.

[0039] When the vulcanized products are transferred to the product transfer conveyor line, they can be unloaded. Therefore, a finished product unloading mechanism is set in the product transfer conveyor line. Figure 4 and Figure 5 The finished product unloading mechanism can block the tooling plate and the upper mold at a fixed position and lift it to a height that is convenient for personnel to operate, so as to facilitate the picking of products. The finished product unloading mechanism includes a second fixed bottom plate 18, a second lifting plate 19 is arranged above the second fixed bottom plate, two tooling pads 20 are arranged on the second lifting plate, a lifting and positioning mechanism 21 is arranged between the two tooling pads, a second lifting cylinder 22 connected to the second lifting plate is arranged on the second fixed bottom plate, and a second guide assembly 23 is also arranged between the second fixed bottom plate and the second lifting plate; when the tooling plate with the product moves to the finished product When the tooling plate is above the unloading mechanism, it will be detected by the sensor, and then the lifting and positioning mechanism will be activated to position the tooling plate on the finished product unloading mechanism. Then the second lifting cylinder will be activated to drive the second lifting plate to move upward. During the rising process, the two tooling pads on the second lifting plate will support the tooling plate to a height that is convenient for manual operation. The above-mentioned lifting and positioning mechanism includes a connecting plate 24, a positioning column 25 is arranged on the connecting plate, the connecting plate is connected to the positioning cylinder 26, the positioning cylinder is fixedly arranged at the bottom of the second lifting plate, and a third guide assembly 27 is arranged between the connecting plate and the second lifting plate. During operation, the positioning cylinder extends, driving the connecting plate and the positioning column to extend, and the positioning column extends into the positioning hole on the tooling plate, thereby positioning the tooling plate in the horizontal direction. The tooling plate is combined with the mold and the product, and has a large weight, so it cannot be easily taken out, that is, there will be no safety accidents after lifting. The number of lifting and positioning mechanisms is 2, and each lifting and positioning mechanism has two positioning columns to achieve four-point limit, which is safe and reliable.

[0040] Reference Figure 9As shown in the figure, during the pouring process, in order to ensure that the pouring machine can accurately pour, a second blocking mechanism 41 is provided in the pouring conveyor line. The second blocking mechanism can block the tooling plate at a fixed position for the pouring machine to pour at a fixed point. The second blocking mechanism includes a mounting base plate 42, a circular cylinder 43 is arranged on the mounting base plate, a connecting seat 44 is sleeved and fixed on the circular cylinder, a rotating blocking block 45 is axially connected to one side of the connecting seat, and a rotation stopping groove 46 is arranged on the other side of the connecting seat. The rotation stopping groove is in fit connection with a rotation stopping column 47, and the rotation stopping column is arranged on the mounting base plate. The circular cylinder abuts against the bottom of the rotating blocking block and provides rotational power. When the circular cylinder moves out, it pushes the rotating blocking block to rotate clockwise, so that the top of the rotating blocking block rotates downward, thus avoiding the movement of the tooling plate without being blocked. When the circular cylinder moves back, the rotating blocking block rotates counterclockwise, and the top of the rotating blocking block rotates upward, thus extending to the moving direction of the tooling plate to play a blocking role. A torsion spring can be arranged at the axially connected position of the rotating blocking block so that the rotating blocking block always abuts against the circular cylinder, or the rotating blocking block can be connected to the circular cylinder to achieve a follow-up effect (adaptive connection is prior art and will not be elaborated). For the design of using a circular cylinder in cooperation with a connecting seat, the installation direction of the connecting seat can be adjusted. The connecting seat is clamped on the circular cylinder. Loosen the clamping, and the connecting seat can be rotated 180 degrees, achieving the effect of quickly adjusting the blocking direction according to design requirements. After clamping, the connecting seat may rotate. Therefore, through the cooperation of the rotation stopping groove and the rotation stopping column, the rotation of the connecting seat in the horizontal direction can be effectively restricted. The rotation stopping column can be locked on the mounting base plate, and a locking position groove is arranged on the mounting base plate to facilitate determining the installation position accuracy of the connecting seat.

[0041] Referring to Figure 1 , Figure 6 , Figure 7 and Figure 8 As shown, the present application also makes improvements to the first tunnel-type heating conveyor line and the second tunnel-type heating conveyor line. First blocking mechanisms 28 are arranged inside both the first tunnel-type heating conveyor line and the second tunnel-type heating conveyor line on the side of the discharge end. The first blocking mechanism includes a fixed base 29, an upper support 30 is arranged above the fixed base, an adjustable double-shaft cylinder 31 is arranged between the upper support and the fixed base, a blocking bracket 32 is axially connected to the surface of the upper support, the center of gravity of the blocking bracket is located at the rear side, and a buffer seat 33 is arranged at the bottom of the rear side. The bottom of the buffer seat abuts against the top of a buffer frame 34, and the buffer frame is fixedly arranged on the fixed base. A blocking bearing 35 is arranged at the top of the blocking bracket.

[0042] Due to the fact that the tooling plates in the first tunnel-type heating and conveying line and the second tunnel-type heating and conveying line have a relatively large weight and a large number of accumulated ones, during the accumulation process, the next tooling plate will generate a relatively large impact force on the tooling plates that have been accumulated in the front. Therefore, a first blocking mechanism with buffering ability is adopted to stop the tooling plate. Specifically, during the blocking process, the adjustable double-axis cylinder extends, driving the upper support to move upward. At this time, the blocking bracket also extends to the moving height of the tooling plate. After the tooling plate contacts the blocking bracket, the force received by the blocking bracket will be transmitted to the buffer frame through the buffer seat at the bottom, and the force is offset by the buffer frame, thus avoiding rapid wear and damage of the connection structure caused by hard contact; and the purpose of setting the blocking bearing is to reduce the friction when the blocking bracket descends. It is in hard contact with the tooling plate itself. When the blocking bracket descends, the blocking bearing rotates to be a rolling friction. The buffer frame includes a buffer upper bracket 36 and a buffer lower bracket 37. Guide columns 39 and buffer springs 38 are arranged between the buffer upper bracket and the buffer lower bracket. A rolling bearing 40 is arranged at the top of the buffer upper bracket. A butt joint guide groove is arranged at the bottom of the buffer seat corresponding to the rolling bearing. After the blocking bracket is stressed, it makes a rotational movement, while the buffer frame makes a vertical movement. Therefore, the rolling bearing and the butt joint guide groove are used in cooperation to reduce the friction between the two components and reduce wear. The guiding function of the butt joint guide groove can ensure that the rotation direction always remains in the circumferential direction of the outer periphery of the shaft-connected rotating shaft, ensure the uniformity of the force on the rotating shaft, and improve the service life.

[0043] Heat insulation covers 48 are also provided at both ends of the first tunnel-type heating and conveying line and the second tunnel-type heating and conveying line. When the door is opened and the internal heat flows out, it flows out along the opening of the heat insulation cover, keeping the heat source away from the worker operation area and optimizing the worker operation environment.

[0044] Based on the above structure, it specifically includes the following production steps. Through the lifting and transfer machine at the entrance of the preheating zone of the second tunnel-type heating and conveying line (i.e., the preheating tunnel-type heating furnace), the tooling plate and the mold are transferred into the preheating tunnel-type heating furnace. When the tooling plate approaches the sensor at the door of the preheating tunnel-type heating furnace, the heat-insulating and heat-preserving lifting door of the preheating tunnel-type heating furnace automatically opens, and the tooling plate carrying the mold flows into the preheating tunnel-type heating furnace. Subsequently, the heat-insulating and heat-preserving lifting door closes, and the timing starts simultaneously. When the tooling plate moves to the exit, it is blocked by the first blocking mechanism. When the timing ends, the first blocking mechanism contacts and blocks and descends, the tooling plate continues to move and the heat-insulating and heat-preserving lifting door opens, the tooling plate flows out and the first blocking mechanism rises to continue blocking the next group of tooling plates; when the tooling plate moves to the casting conveying line, the corresponding lifting and transfer machine rises. At this time, the height of the chain drive assembly on the lifting and transfer machine is the same as the height of the chain in the preheating tunnel-type heating furnace. The tooling plate moves onto the lifting and transfer machine and is stopped by the side baffle. Then the lifting and transfer machine descends to a height lower than the height of the chain on the casting conveying line, and the tooling plate falls above the chain of the casting conveying line and continues to move along the chain. The movement of the tooling plate will be stopped by the second blocking mechanism. The second blocking mechanism can be multiple to block and form an accumulation area and a casting area. When the accumulation quantity is saturated, it is lowered to the casting area and continues to be blocked. When the number of tooling plates in both areas is saturated, the casting machine starts casting. After casting is completed, the tooling plate is released, and the next uncast tooling plate carrying the mold quickly moves under the head of the casting machine to continue casting. The cast tooling plate moves to the end of the casting conveying line and is stopped by the side baffle on the lifting and transfer machine. The lifting and transfer machine lifts to make the height of the chain drive assembly the same as the height of the chain of the second tunnel-type heating and conveying line (vulcanization tunnel-type heating furnace), and starts the transfer to transfer the tooling plate to the entrance of the vulcanization area of the vulcanization tunnel-type heating furnace. Subsequently, the heat-insulating and heat-preserving lifting door automatically opens, the tooling plate flows into the vulcanization tunnel-type heating furnace, the heat-insulating and heat-preserving lifting door closes, and the timing starts simultaneously. When the tooling plate moves to the exit, it is blocked by the first blocking mechanism. When the timing ends, the cylinder descends, the tooling plate continues to move and the heat-insulating and heat-preserving lifting door opens, the tooling plate flows out and the first blocking mechanism rises to continue blocking the next group of tooling plates; after the tooling plate flows out, the corresponding lifting and transfer machine here transfers the tooling plate to the product transfer conveying line to continue the transfer. The finished product blanking mechanism on the product transfer conveying line clamps the positioning post into the groove of the tooling plate and lifts the tooling plate through its action. When the tooling plate rises to the worker operation height, the worker takes the product in the mold on the tooling away, presses the button, and the finished product blanking mechanism resets. The tooling plate falls above the product transfer conveying line and continues to move and then is blocked by the next station blocking cylinder. After repeating multiple times to complete all operations, the tooling plate continues to move to the lifting and transfer machine at the entrance of the preheating zone and enters the production automatic line for transfer again.

[0045] Electric rollers are provided at the transition of each of the above conveyor lines to prevent the tooling plate from being blocked or shaken due to the loss of lower support, improving the stability and smoothness of conveying.

[0046] The above embodiments are only preferred embodiments given to fully illustrate the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are within the protection scope of the present invention.

Claims

1. A pouring polyurethane production automatic line, characterized in that: It includes a pouring conveyor line, a first tunnel-type heating conveyor line, a product flow conveyor line and a second tunnel-type heating conveyor line which are arranged in sequence and connected end to end, and cooperate to form a rotary flow platform, on which a plurality of tooling plates are arranged, on which molds are arranged, and the tooling plates circulate on the rotary flow platform; A pouring machine is provided on one side of the pouring conveyor line, and a moving track is provided at the bottom of the pouring machine. The pouring machine moves along the moving track and pours materials into the mold on the pouring conveyor line; The first tunnel-type heating conveyor line and the second tunnel-type heating conveyor line are used for high-temperature vulcanization of the polyurethane in the mold and preheating the tooling plate and the mold respectively; The product flow conveying line is provided with a finished product unloading mechanism.

2. The automatic production line for casting polyurethane according to claim 1, characterized in that: Lifting and transplanting machines are provided between the pouring conveyor line and the first tunnel-type heating conveyor line, between the first tunnel-type heating conveyor line and the product circulation conveyor line, between the product circulation conveyor line and the second tunnel-type heating conveyor line, and between the second tunnel-type heating conveyor line and the pouring conveyor line.

3. The automatic production line for casting polyurethane according to claim 2, characterized in that: The lifting transplanter includes a first fixed bottom plate, a first lifting plate is arranged above the first fixed bottom plate, a chain drive assembly is arranged on the first lifting plate, a first lifting cylinder connected to the first lifting plate is arranged on the first fixed bottom plate, a first guide assembly is also arranged between the first fixed bottom plate and the first lifting plate, and a side baffle is also arranged on one side of the first lifting plate.

4. The automatic production line for casting polyurethane according to claim 1, characterized in that: A roller-type inclined lifting conveying assembly is arranged on one side of the product flow conveying line, one end of the roller-type inclined lifting conveying assembly is connected to the product flow conveying line shaft, an inclined lifting cylinder is also arranged between the roller-type inclined lifting conveying assembly and the product flow conveying line, and a plurality of electric rollers are arranged in the roller-type inclined lifting conveying assembly.

5. The automatic production line for casting polyurethane according to claim 1, characterized in that: The finished product unloading mechanism includes a second fixed bottom plate, a second lifting plate is arranged above the second fixed bottom plate, two tooling pads are arranged on the second lifting plate, a lifting and positioning mechanism is arranged between the two tooling pads, a second lifting cylinder connected to the second lifting plate is arranged on the second fixed bottom plate, and a second guide assembly is also arranged between the second fixed bottom plate and the second lifting plate.

6. The automatic production line for casting polyurethane according to claim 5, characterized in that: The lifting and positioning mechanism includes a connecting plate, a positioning column is arranged on the connecting plate, the connecting plate is connected to a positioning cylinder, the positioning cylinder is fixedly arranged at the bottom of the second lifting plate, and a third guide assembly is arranged between the connecting plate and the second lifting plate.

7. The automatic production line for casting polyurethane according to claim 1, characterized in that: The first tunnel-type heating conveyor line and the second tunnel-type heating conveyor line are both provided with a first blocking mechanism inside on one side of the discharge end, the first blocking mechanism includes a fixed base, an upper support is provided above the fixed base, an adjustable double-axis cylinder is provided between the upper support and the fixed base, a blocking bracket is axially provided on the surface of the upper support, the center of gravity of the blocking bracket is located on the rear side, and a buffer seat is provided at the bottom of the rear side, the bottom of the buffer seat abuts against the top of the buffer frame, the buffer frame is fixedly provided on the fixed base, and a blocking bearing is provided on the top of the blocking bracket.

8. The automatic production line for casting polyurethane according to claim 7, characterized in that: The buffer frame includes an upper buffer bracket and a lower buffer bracket, a guide column and a buffer spring are arranged between the upper buffer bracket and the lower buffer bracket, a rolling bearing is arranged on the top of the upper buffer bracket, and an abutment guide groove is arranged on the bottom of the buffer seat corresponding to the rolling bearing.

9. The automatic production line for casting polyurethane according to claim 1, characterized in that: A second blocking mechanism is arranged in the pouring conveyor line, and the second blocking mechanism includes a mounting base plate, a circular cylinder is arranged on the mounting base plate, a connecting seat is fixedly mounted on the circular cylinder, a rotating blocking block is axially arranged on one side of the connecting seat, a rotation-stopping groove is arranged on the other side of the connecting seat, the rotation-stopping groove is cooperated and connected with a rotation-stopping column, the rotation-stopping column is arranged on the mounting base plate, and the circular cylinder abuts against the bottom of the rotating blocking block and provides rotational power.

10. The automatic production line for casting polyurethane according to claim 1, characterized in that: Both ends of the first tunnel-type heating conveyor line and the second tunnel-type heating conveyor line are provided with heat insulation covers, and the number of the pouring machines is greater than or equal to 2.

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